Haha yeah I understand that but my thoughts were that because the thermometer reads air temp when out of water it would be reading the temp of the cold air because there are so many bubble, I've put it back in the actual res now just to be safe
Lighting 1st DWC grow, BAM by Pal
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Haha yeah I understand that but my thoughts were that because the thermometer reads air temp when out of water it would be reading the temp of the cold air because there are so many bubble, I've put it back in the actual res now just to be safe
Day 25
Well we're on day 25 now, day 16 if you count the roots emerging from the netpot as day one Vira
She's still fighting despite constantly having roots get broken off it's insane, colour gets slightly better each day but I don't wanna over do the nutes and give her more problems, she's at 2.0 EC now (1.6EC minus my background water) so I may go to 1.7 today, still no signs of burn. Here's some pics to inspect, let me know what you think
Well we're on day 25 now, day 16 if you count the roots emerging from the netpot as day one Vira
She's still fighting despite constantly having roots get broken off it's insane, colour gets slightly better each day but I don't wanna over do the nutes and give her more problems, she's at 2.0 EC now (1.6EC minus my background water) so I may go to 1.7 today, still no signs of burn. Here's some pics to inspect, let me know what you think
Day 26
Still having root issues yet she continues to try and grow more each day, I feel bad for her! Today I think I see signs of burn, even though the plant still looks slightly hungry. Can someone tell me if this is burn or mag def
Either way I need to sort that today.
Other than that she's looking okay, I've been doing some vigorous leaf tucking to try and expose all the undergrowth and from above she's growing in almost a diamond formation, looks pretty cool for a stunted baby! Her colour is a lot flatter green and looks even under natural light, the flash tends to show things I can't even see in natural light. LED is at 24" following the GN manual, if I can keep her relatively short and chunky that would be nice, here's some more pics from today - tips etc always welcome, hope everyone is enjoying their weekend:smokebuds:
Still having root issues yet she continues to try and grow more each day, I feel bad for her! Today I think I see signs of burn, even though the plant still looks slightly hungry. Can someone tell me if this is burn or mag def
Either way I need to sort that today.Other than that she's looking okay, I've been doing some vigorous leaf tucking to try and expose all the undergrowth and from above she's growing in almost a diamond formation, looks pretty cool for a stunted baby! Her colour is a lot flatter green and looks even under natural light, the flash tends to show things I can't even see in natural light. LED is at 24" following the GN manual, if I can keep her relatively short and chunky that would be nice, here's some more pics from today - tips etc always welcome, hope everyone is enjoying their weekend:smokebuds:
Day 27
Morning all, receiving some mixed signals from my girls so I hope theres someone out there that can help today, I'm gonna make a post in the infirmary section also to try and get a few opinions.
The problem is that whilst I seem to have found a fairly sweet spot for the top and new growth (all green no burn), the older fan leaves are starting to fade in colour AND have tip burn. I think it may just be super greedy for the calmag under 24/0 led lighting but I'd love a second opinion on this because I can't see how it can have tip burn but still be hungry. Tomorrow is the start of week 4 so I could make a fresh res today or tomorrow. PH remains very stable at 5.7, EC has risen from 2.0 to 2.2 (1.6 to 1.8 without background ec) Does that mean she wants less? As I said I will post in the Infirmary section but take a look at the pictures and let me know what you think, it's really appreciated
:
Morning all, receiving some mixed signals from my girls so I hope theres someone out there that can help today, I'm gonna make a post in the infirmary section also to try and get a few opinions.
The problem is that whilst I seem to have found a fairly sweet spot for the top and new growth (all green no burn), the older fan leaves are starting to fade in colour AND have tip burn. I think it may just be super greedy for the calmag under 24/0 led lighting but I'd love a second opinion on this because I can't see how it can have tip burn but still be hungry. Tomorrow is the start of week 4 so I could make a fresh res today or tomorrow. PH remains very stable at 5.7, EC has risen from 2.0 to 2.2 (1.6 to 1.8 without background ec) Does that mean she wants less? As I said I will post in the Infirmary section but take a look at the pictures and let me know what you think, it's really appreciated
:Hi Pal, Firstly thanks for sharing your journey its a great help for all of us led/dwc first timers. :
I think the problem your currently having is a magnesium deficiency.. Im not an expert though and only on my first attempt myself and could probably do with some advice rather than offering it lol
Heres my reasoning though bro see what you think... :smokebuds:
Magnesium deficiency starts at the oldest leaves first then progresses upwards. Magnesium is a mobile nutrient and when in short supply will be pulled from old deposits to sustain new growth. The leafs will yellow between dark green veins and rust spots will appear around leaf tips and margins. The tips will curl up and die of. This happens from the bottom up untill whole plant is effected if left untreated. Magnesium defieciency can be casued by low root zone temperatures and acidic ph (below 5.8 in hydro).An excess of nitrogen (potassium ammonia) and/or calcium (carbonate) causes magnesium to be bound and unavailable for absorbtion. High Ec levels can slow water evaporation which effects magnesium availability. Underdeveloped root systems can be unable to supply enough magnesium for fast growing plants.
With all the above considered after reading your journal i think this could be the problem? I think you have had low res temps? the ph hasnt risen above 5.7? Maybe some root issues? plus high ec? what do you think?
I would do a res change with lower ec of 1.4 plus background (if your currently at 1.6?) and a higher ph of 5.8... I would add to my base some cal mag, root stim, silicone and some kind of revive/superthrive. I would keep res temps between 21c-23c and keep room temp 25c-27c. recovery should be apparrent after a few days.
Another quick remedy for mag deficiency is to spray a 2% solution of epsom salts on foliage. works well in soil/coco but not sure with led dwc and 24 hr light. Usually it would be reccomended to spray at lights off or low light levels. Add to that the speed of nutrient application in hydro compared to soil maybe foliar feeds are not neccassary anyway?
Im not sure what the root problem you have is or how you would go about solving it. But what about some h202 at low end levels to solve any unweanted nasties in your res? Just an idea i have no experience to go on.
Anyway thats my 2 cents for what its worth
.. Im no master grower but most of the above comes from sources written by them
Good growing karma sent your way bro and once again thanks for the grow.
:group:
:I think the problem your currently having is a magnesium deficiency.. Im not an expert though and only on my first attempt myself and could probably do with some advice rather than offering it lol
Heres my reasoning though bro see what you think... :smokebuds:
Magnesium deficiency starts at the oldest leaves first then progresses upwards. Magnesium is a mobile nutrient and when in short supply will be pulled from old deposits to sustain new growth. The leafs will yellow between dark green veins and rust spots will appear around leaf tips and margins. The tips will curl up and die of. This happens from the bottom up untill whole plant is effected if left untreated. Magnesium defieciency can be casued by low root zone temperatures and acidic ph (below 5.8 in hydro).An excess of nitrogen (potassium ammonia) and/or calcium (carbonate) causes magnesium to be bound and unavailable for absorbtion. High Ec levels can slow water evaporation which effects magnesium availability. Underdeveloped root systems can be unable to supply enough magnesium for fast growing plants.
With all the above considered after reading your journal i think this could be the problem? I think you have had low res temps? the ph hasnt risen above 5.7? Maybe some root issues? plus high ec? what do you think?
I would do a res change with lower ec of 1.4 plus background (if your currently at 1.6?) and a higher ph of 5.8... I would add to my base some cal mag, root stim, silicone and some kind of revive/superthrive. I would keep res temps between 21c-23c and keep room temp 25c-27c. recovery should be apparrent after a few days.
Another quick remedy for mag deficiency is to spray a 2% solution of epsom salts on foliage. works well in soil/coco but not sure with led dwc and 24 hr light. Usually it would be reccomended to spray at lights off or low light levels. Add to that the speed of nutrient application in hydro compared to soil maybe foliar feeds are not neccassary anyway?
Im not sure what the root problem you have is or how you would go about solving it. But what about some h202 at low end levels to solve any unweanted nasties in your res? Just an idea i have no experience to go on.
Anyway thats my 2 cents for what its worth
.. Im no master grower but most of the above comes from sources written by themGood growing karma sent your way bro and once again thanks for the grow.
:group:Hi Pal, Firstly thanks for sharing your journey its a great help for all of us led/dwc first timers.
I think the problem your currently having is a magnesium deficiency.. Im not an expert though and only on my first attempt myself and could probably do with some advice rather than offering it lol
Heres my reasoning though bro see what you think... :smokebuds:
Magnesium deficiency starts at the oldest leaves first then progresses upwards. Magnesium is a mobile nutrient and when in short supply will be pulled from old deposits to sustain new growth. The leafs will yellow between dark green veins and rust spots will appear around leaf tips and margins. The tips will curl up and die of. This happens from the bottom up untill whole plant is effected if left untreated. Magnesium defieciency can be casued by low root zone temperatures and acidic ph (below 5.8 in hydro).An excess of nitrogen (potassium ammonia) and/or calcium (carbonate) causes magnesium to be bound and unavailable for absorbtion. High Ec levels can slow water evaporation which effects magnesium availability. Underdeveloped root systems can be unable to supply enough magnesium for fast growing plants.
With all the above considered after reading your journal i think this could be the problem? I think you have had low res temps? the ph hasnt risen above 5.7? Maybe some root issues? plus high ec? what do you think?
I would do a res change with lower ec of 1.4 plus background (if your currently at 1.6?) and a higher ph of 5.8... I would add to my base some cal mag, root stim, silicone and some kind of revive/superthrive. I would keep res temps between 21c-23c and keep room temp 25c-27c. recovery should be apparrent after a few days.
Another quick remedy for mag deficiency is to spray a 2% solution of epsom salts on foliage. works well in soil/coco but not sure with led dwc and 24 hr light. Usually it would be reccomended to spray at lights off or low light levels. Add to that the speed of nutrient application in hydro compared to soil maybe foliar feeds are not neccassary anyway?
Im not sure what the root problem you have is or how you would go about solving it. But what about some h202 at low end levels to solve any unweanted nasties in your res? Just an idea i have no experience to go on.
Anyway thats my 2 cents for what its worth
Good growing karma sent your way bro and once again thanks for the grow.
Hey Nico thanks so much for the lengthy reply and for reading through my journal. Nice to see a new member with your attitude to helping others :High 5: Magnesium def is the best answer I could come up with too - it's showing all the signs as you stated. She's been given a fresh res just now so hopefully I'll know if I'm heading in the right direction by the morning. I wish you the best of luck here at AFN and with your grow mate and if there's anything I can help you with (maybe not DWC advice
: ) then feel free to give me a shout :smokebuds:Fresh res as follows:
15ml CalMag (to try and get ahead of the deficiency)
5ml Liquid Silicon
15ml Rhizotonic
20ml Cannazym
28ml Aqua Vega A+B
PH 5.7 while she remains in veg will let her go from 5.8-6.0 in flowering
EC 1.4
All those measurements apply to a 15L res, I took two Litres out to lower the water level for roots, standing at 13L now.
15ml CalMag (to try and get ahead of the deficiency)
5ml Liquid Silicon
15ml Rhizotonic
20ml Cannazym
28ml Aqua Vega A+B
PH 5.7 while she remains in veg will let her go from 5.8-6.0 in flowering
EC 1.4
All those measurements apply to a 15L res, I took two Litres out to lower the water level for roots, standing at 13L now.
Cheers Pal, I see you pretty much sussed the problem already anyway but sometimes its good to get a re-assuring second opinion, fresh set of eyes and all :
Im sure I will need plenty of help, your offer is appreciated bro :smokebuds:
I know the rule of thumb for dwc is usually 5.5 first two weeks then let rise to 5.6-5.7 over the next week untill flower, when you want to increase to 5.8 then gradually to 6. I understand this is to optimise the availabiltiy of desired nutrients at various growth stages. BUT.. there is always a but, On the ph/nutrient availabilty chart (i think vira has a copy?) magnesium is not available untill 5.8 only calcium is available at 5.7 and below. The other thing I notice is everything seems to be available at 5.8 bar maganese, so why not leave it there the whole grow, with the exception of maybe seedling stage? Plus i think i read somewhere that most root stims are a micronutrient mix with extra phosphorus to encourage root growth? However phosphorus is not readily available at the low ph required at the start (5.5). This can get confusing! It seems like ratios would be a better way to manipulate nutrient availability rather than locking out nutrients with ph to encourage more uptake of another? just a thought but im sure there is a reason for the way its done anyhow.
Another thing to consider is whatever benefit of having ph at 5.7 gives i would say having mag available is more important as this effects end yields significantly? maybe not at the start (seedling) but at your stage of growth I would assume so?
Sorry to bombard you with these long posts, maybe i should pace myself, after all its only my second post! But i live and breath dwc/led at the min and enjoy sharing that experience with others so no harm i guess?
all the best pal
:group:
:Im sure I will need plenty of help, your offer is appreciated bro :smokebuds:
I know the rule of thumb for dwc is usually 5.5 first two weeks then let rise to 5.6-5.7 over the next week untill flower, when you want to increase to 5.8 then gradually to 6. I understand this is to optimise the availabiltiy of desired nutrients at various growth stages. BUT.. there is always a but, On the ph/nutrient availabilty chart (i think vira has a copy?) magnesium is not available untill 5.8 only calcium is available at 5.7 and below. The other thing I notice is everything seems to be available at 5.8 bar maganese, so why not leave it there the whole grow, with the exception of maybe seedling stage? Plus i think i read somewhere that most root stims are a micronutrient mix with extra phosphorus to encourage root growth? However phosphorus is not readily available at the low ph required at the start (5.5). This can get confusing! It seems like ratios would be a better way to manipulate nutrient availability rather than locking out nutrients with ph to encourage more uptake of another? just a thought but im sure there is a reason for the way its done anyhow.
Another thing to consider is whatever benefit of having ph at 5.7 gives i would say having mag available is more important as this effects end yields significantly? maybe not at the start (seedling) but at your stage of growth I would assume so?
Sorry to bombard you with these long posts, maybe i should pace myself, after all its only my second post! But i live and breath dwc/led at the min and enjoy sharing that experience with others so no harm i guess?
all the best pal
:group:
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Cheers Pal, I see you pretty much sussed the problem already anyway but sometimes its good to get a re-assuring second opinion, fresh set of eyes and all
Im sure I will need plenty of help, your offer is appreciated bro :smokebuds:
I know the rule of thumb for dwc is usually 5.5 first two weeks then let rise to 5.6-5.7 over the next week untill flower, when you want to increase to 5.8 then gradually to 6. I understand this is to optimise the availabiltiy of desired nutrients at various growth stages. BUT.. there is always a but, On the ph/nutrient availabilty chart (i think vira has a copy?) magnesium is not available untill 5.8 only calcium is available at 5.7 and below. The other thing I notice is everything seems to be available at 5.8 bar maganese, so why not leave it there the whole grow, with the exception of maybe seedling stage? Plus i think i read somewhere that most root stims are a micronutrient mix with extra phosphorus to encourage root growth? However phosphorus is not readily available at the low ph required at the start (5.5). This can get confusing! It seems like ratios would be a better way to manipulate nutrient availability rather than locking out nutrients with ph to encourage more uptake of another? just a thought but im sure there is a reason for the way its done anyhow.
Another thing to consider is whatever benefit of having ph at 5.7 gives i would say having mag available is more important as this effects end yields significantly? maybe not at the start (seedling) but at your stage of growth I would assume so?
Sorry to bombard you with these long posts, maybe i should pace myself, after all its only my second post! But i live and breath dwc/led at the min and enjoy sharing that experience with others so no harm i guess?
all the best pal
The lengthy replies are where its at bro, they're always good to read through. I did think about the PH ever since I saw that chart, I left it at 5.8 this morning to see if that helps, the lower EC of 1.4 hasn't helped the matter, just made her look hungrier around new growth so I'm gonna up that to 1.6 again soon. I think it's too early to see the Mag def clearing up but hopefully by tonight I'll know if it's getting worse or better. The dose is at 15ml right now which is quite high. Driving me mad trying to get this plant healthy all over
Thanks again for your input, doesn't matter if it's your second post it's more about your attitude and you've got that spot on :smokebuds:Similar threads
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