Help Please

[BudEHolly]

Noob indoor grower. Amnesia Haze, 32 days from seed. In 3 gallon pots. OF soil with 30% perlite added. (1) 150 and (1) 300W Platinum LEDS. Gorilla Grow tent 4X4X71". In line fan and carbon filter. Currently 18/6 on lights. Noticed these spots last night when watering. Water ph 6.4. 4ml Voo Doo juice and 1 tsp each of Grow Big and Big bloom. This is just on one plant. The other is fine.

What the heck am I doing wrong? Thanks in advance for the help!

 

[Fantasy Island]

That one has a pretty cool design but seriously are you adding calcium? Like cal/mag?

 

[wg]

It looks like she needs more magnesium and or calcium - I'd definitely look into adding a liquid supplement to that array of nutrients. CaliMagic, CalMag, CalMag+, etc are all good options. As well, another cheap good to add supplement that helps the transportation of nutrients and increases the plant's resilience is Silica. Good luck and keep us posted!

 

[Waira]

Bud-- my first concern is the soil pH, FuxFarms has been notorious lately for badly acidic soils, we're talking low 5's here!! If it's acidic like I suspect, you might have a lockout type defc., most likely P, from the looks of those symptoms, though Ca gets twitchy at similar pH ranges, and more rarely cause those broader necrotic patches,... if this is the case, a pH correcting is needed, otherwise adding more P or Ca in is pointless, as it's rendered unabsorbable, even if it's present if sufficient amounts,...I assume you have a pH meter? Even though I dislike the run-off method (lot's of inherent measurement error sources), if you follow this guide, you can at least get a ballpark estimate; best thing is an actual in-soil type device, like the Accurate 8 soil pH probe...

https://www.autoflower.org/threads/...-for-run-off-testing-and-ph-estimation.41733/

... get us a reading and we'll make a plan! Do you have any experience with foliar feeding? And happen to have a wetting agent/ water spreader product around? This technique is great for treating defc.'s, as it's the fastest way into the plant, and bypasses the roots zone, when there's trouble down there,..

 

[BudEHolly]

Bud-- my first concern is the soil pH, FuxFarms has been notorious lately for badly acidic soils, we're talking low 5's here!! If it's acidic like I suspect, you might have a lockout type defc., most likely P, from the looks of those symptoms, though Ca gets twitchy at similar pH ranges, and more rarely cause those broader necrotic patches,... if this is the case, a pH correcting is needed, otherwise adding more P or Ca in is pointless, as it's rendered unabsorbable, even if it's present if sufficient amounts,...I assume you have a pH meter? Even though I dislike the run-off method (lot's of inherent measurement error sources), if you follow this guide, you can at least get a ballpark estimate; best thing is an actual in-soil type device, like the Accurate 8 soil pH probe...

https://www.autoflower.org/threads/...-for-run-off-testing-and-ph-estimation.41733/

... get us a reading and we'll make a plan! Do you have any experience with foliar feeding? And happen to have a wetting agent/ water spreader product around? This technique is great for treating defc.'s, as it's the fastest way into the plant, and bypasses the roots zone, when there's trouble down there,..

Thanks Waira, I've been on top of the water Ph going in but haven't checked it going out. I'll do that and report back. So far it looks like Cal-Mag issue but I'll check the run off Ph

 

[BudEHolly]

Latest update...had a major electrical problem. Still working on it. I guess this is the sort of thing to expect for first time indoor grow. Damn

 

[BudEHolly]

Checked the Ph at the roots and it was 5.8 for both plants. They're in 3 gallon pots so I flushed each with 3 gallons of 6.5 Ph and then let them sit for and hour. Final gallon with Ph at 7.3 plus 2ml of CalMag. Hopefully this corrects the problem.

Thanks again Waira. I guess the first one is always about the learning

 

[Waira]

.....5.8 isn't too bad, with low to mid 6's being best,...-- I was expecting worse! Oh yeah, first one is the steepest part of the learning curve, mate - and pH issues can be a harsh lesson! Having the right testing equipment can is critical for both prevention and especially fixing problems,... There's a relatively inexpensive actual in-soil pH meter called Accurate 8 soil pH probe, far better than the run-off method-- look it up!.... when flushing, it's a good idea to include 1/8-1/4 str. nutes in the final pour as well, since some good stuff gets removed as well,.. don't want the defc. to continue! To facilitate some faster drainage, and reduce the time the soil is water-logged, try this trick: get a 1/4"+ stack of newspaper, with a couple paper towels on top folded over to make a soft pad; place the pots on top, idea being the soft padding of the PT's will make contact with the drainage holes, and start drawing water away by wicking action... after several hours, way more excess water has been removed than by free draining alone, due to this capillary type action... a big, breathing relief to the roots!

 

[BudEHolly]

.....5.8 isn't too bad, with low to mid 6's being best,...-- I was expecting worse! Oh yeah, first one is the steepest part of the learning curve, mate - and pH issues can be a harsh lesson! Having the right testing equipment can is critical for both prevention and especially fixing problems,... There's a relatively inexpensive actual in-soil pH meter called Accurate 8 soil pH probe, far better than the run-off method-- look it up!.... when flushing, it's a good idea to include 1/8-1/4 str. nutes in the final pour as well, since some good stuff gets removed as well,.. don't want the defc. to continue! To facilitate some faster drainage, and reduce the time the soil is water-logged, try this trick: get a 1/4"+ stack of newspaper, with a couple paper towels on top folded over to make a soft pad; place the pots on top, idea being the soft padding of the PT's will make contact with the drainage holes, and start drawing water away by wicking action... after several hours, way more excess water has been removed than by free draining alone, due to this capillary type action... a big, breathing relief to the roots!

Thanks again Waira. I'll try the newspaper thing. Big time props to my friend from the left coast...boy do I miss home