Fed them full strength bloom nutes, 1/2 strength cal mag and 1ml of big bloom. Will see what this does.
Another problem
- Thread starter Boognelson87
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The three images of leaves you posted, show the new growth is fine, not even a 3mm tip burn due to to strong (Strg), a nutrient feed Ec = (Mls)....... however, the older lower fans are showing nutrient burn event (Now Passed), that has drawn burn to the most of leaf, on a few of the lower older leaves.....
Since you have "Halved" your nute "Milliliter" per litre of feed. Your overnute issues have disappeared as shown in the new growth, with flowers un-affected "After" the burn event, Booog. I would keep that dose level for now; and check these items, as a priority;
Boog, you stated you do use a Ph pen, do you use an Ec pen to control nutrient acidity ?? in the grow medium, you may well have over fed and acidified the soil, 9 days into flower, quite a bit of nute has flowed in.
Do a 200ml run off test half nute strength (Strg), with a Ph6.5 water. Run feed in untill flow appears at the bottom, take Ph............. if Ph5.8 you need to raise alkalinity , if 6.9 you need to lower alkalinity,....... so it dose not affect nute uptake as indicated in chart below (Cht)....
72F = 22c.................. your soil temp need to be in the tropical temp range, as this is a tropical ericaceous plant....... The Ericaceae are a family of flowering plants, commonly known as the heath or heather family, found most commonly in acid and infertile growing conditions. The family is large, with c. 4250 known species spread across 124 genera, making it the 14th most species-rich family of flowering plants.
You must maintain your light on lights out root matrix temperature at 22c / 72f min to 28c / 82f max......... sativas prefer 26c to 29c......to ensure correct nutrient uptake, use a 1kw thermostatic controlled (26c O
), floor fan heater, to keep 26c as "Cold" saturated soil is not conducive to somatic growth, @72f, soil temp is wey to low, for nutrient assimilation... soil temperature is controlled by room temperature, RH = relative humidity, is a factor of room temperature....... your VPd (RH) target area is thus;Flower NPK botani = 1:2:2................... a better ratio is my greenair genesis........... it's a good (Conc) concentration, so it lasts well, you dont need many mls, (Milliliters) to bring up "Ec" to 1.1 !!
Microbase NPK 3:10:19
Microbloom NPK 6:15:17
combined 9:25:46
a better ratio for flower Boogs............ 1:2;2 sounds a bit weak mate.. ok
Your best chance of controlling nutrient input, is via the Ec pen. The Ec range over a 100 day grow will be around 0.3 100mm seedlings, to 1.10 as a final max flowering Ec last 3-4wks of flower before the zero nute 10 day flush period. Ph range to match is veg 6.3 in soil, to 7.1 in flower, in soil (See Nute vs Ph) chart above......
see how the plants go, after you raise root temp to 23c.............. feed at Ph6.5 half nute power, and feed water temperature is to match root temp ok............ so feed water "Warmed" & "Aerated" to 24c-25c "When Fed"...........
use an infra red hand held thermometer, to take temperature of the leaves at the canopy............... lower light untill temp hits 24-25c............. so you get the correct flux of "lux" at the leaves, to promote quality growth seed.... hope that is some quality information Boogs mate................. good luck with the rest of flowering......... Pm me if you get further issues ok.................
Boogs, post run off Ph'es i'll drop back in and take a look........................ raise acidic soil Ph using "Bi-Carb" of soda, @3tbls (Tablespoons) of bi-carb in 500ml water........ to raise the Ph of the home made feed and water by 0.6, so Ph6.5 + 0.6 = Ph 7.1.....final feed Ph7.1@23c...........feed to run off, untill run off Ph test show a rise in Ph back to 6.5 to 6.6. use this method to raise soil Ph if your 1st test shows it @5.5 to 6.0 or below....... good luck................ALR
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@AutoLowRyder thank you so much. I Will do what I can. Couldn't of gotten a better answer. Idk if you ever seen the movie Billy madison. When the guy he calls makes that shot and he goes man I'm glad I called that guy. Just made me think of that when im like man I'm glad I tagged that guy lol
I'm sure they will be fine on the half nute power, i would as a precaution, as it might be the reason for the mild overnute event,............ check your "Ph Pen" is calibrated, or re-calibrate the pen @7.0 re-cal fluid....... it's simple thing, but when the salts build up on the glass Ph anode, under the meter shroud, over time (5mnths).
The Ph readings begin to shift (Down) normally, as nute salts are generally on the acidic side of Ph, begin to build up on the pen's anode. Accordingly, a 0.1 shift is = to a 100 fold increase in hydrogen ions 'Anions" in solution................ the plant notices, as it like stable "Diurnal" chemical routines.......... and environmental factors.
Would like to know what the final Ec is of the (Liquid ?) nutrient composition, you make up, is, my guess is above Ec1.3, as half of that = Ec0.65, which is why the plants look so healthy, now, with the new growth......... wouldn't mind betting, the initial cause of burn was, no Ec pen control of nute power, ml's per ltr chronic overnute, in combination with, long term un calibrated Ph pen (Anode Salt Build Up)....... leading to acidic feeds in low temp soil, for the whole veg period, and on into flower day 9.....................
Remember, all cannabis strains, are ericaceous, & anemophylic, in nature, & of tropical origin @28c ALR
Thanks man, been super busy. I'm hopefully gonna get to it in a bit. If nobody told you you are a weed genius well you are lol. I get halfway through these messages and im like shit. Didn't know growing a weed is this hard lmao. Jokes aside. I appreciate your effort and help and I will take the steps needed to fix this. Thanks again. I will let you know soon what is up.
@AutoLowRyder I need your assistance. My ph going in is 6.4. Run off is 5.5. This is soil. Should I flush with a higher ph?
Usedd 7 gallona of water at 8.0 ph. My soil runoff is still showing 5.9 to 6.0. Don't know how much I should add as far as water but I stopped there for now.
raising 'Acidic" Ph with an alkaline solution, should be done over 4 to 6 waterings, so as not to Ph shock the plant root matrix, as you are shifting the 'Cation" alkalinity up wards......
You jumped from 5.5 to 8.0............... result was positive, run off @5.9............ i would have gone 6.5 x 2 watering's, 7.0 x 2 waterings's,7.5 x 2 watering's = you should be back near 6.5 run off.............
An increase in Ph of 0.1 is = to a 100 fold increase in "Cation" = calcium carbonate, CaCo3... so you can see why th plant would notice a jump in Ph, 5.5 to 6.0 = 500 fold increase (0.1x5) in alkalinity or buffer.
7 gal flush 7 x 4.54ltrs = 31ltr flush, through a 15ltr pot Boogs mate ??..........if 15 ltrs probably 15ltr would have done it ............... when you flush allways flush with a "half Strength" nute, same as you have been feeding except half power and increase Ph..............
continue to flush with 15ltr hits, with 0.3 to 0.4 increases in Ph of half nute flush water @23c, untill the run off hits back at 6.5 to 6.6............... if it stumbles at Ph 6.4............ and dont wanna budge, add this;
500ml of your feed water @23c.................add 4tbls of "Bi-Carb" of soda, into 500ml, mix in, then use this to raise the soil Ph further, use bi-carb to raise flush water Ph..................... once Ph returns in soil, (15ltrs ?), you will see a marked up lift in the vigor of the Dame !!..................ALR
Maybe im mistaken but I thought you always want to flush at 3 times your pot size? The pots I use are 11 liters. 7 gallon is still under the 3 times pot size amount. This is why I chose 7 gallons. Even though it can be wrong since I'm new at this But this is why I chose that amount.. do you think it could just be the soil and I need to switch? The fox farms ocean forest? Here's a couple pictures from today. Will continue to update after i water tomorrow with run off.
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@Waira @AutoLowRyder well today I finally watered again. And I put it in at 7.2 ph and run off came out as 4.8... its startinf to spread to almost all the leaves. My other plant is now doing the same thing..put in at 7.2 and run off is 5.0
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