Quote Originally Posted by Rusty Trichome
In my garden, in the winter, the soil retains water longer than during the summer. Tiz why I add perlite when cold/humid. If the lower root zone isn't being allowed to "air-out' a tad, you can develop problems with oversaturation. There is usually no need to completely saturate the soil, except during a flush. You mentioned half-gallon of water per 3 gallon (or so) pot, I believe, plus additional waterings of around 1/2 gallon. In my garden I go through about half that. Did you by chance add perlite to the potting soil before use? If so, perhaps you use more perlite than I do which would retain less moisture when watering.

Did you find-out the MG schedule for their nutrients? (is it a weekly schedule that's listed, or does it say to feed every other week?) I'd find-out for certain, and start following the instructions.

Exactly what are you using to determine ingoing/runoff ph?

How long have the been inside the pots they are in? Just curious, because it doesn't usually take long to fill-in the rootball. There shouldn't really be "plenty of room" in the pot. Should look fairly tightly-packed unless it's only been a week or so.

Even if you cut the dosages in half for the Scotts or the MG, they are still about twice as 'strong' as other 'cannabis' nutrients. Compare their numbers to 'standard' cannabis nutes.

Are you using superthrive or something similar?

Is there a fan on 'em, for proper ventilation of heat and providing fresh air?
Ok I looked up the usage directions on scott's website. Apparently the feeding instruction are feed once every 7-14 days. so with a 50% solution on cannabis, it should be 7-14, correct? I guess this means i've been feeding about twice as much as I should.

The roots- They are fairly compact, but when I say they have plenty of room I mean they dont seem like they will get bound any time soon. They have been in the pots for about a month though. I'm not going to bother transplanting as this would mean another long drive to get soil/pots/etc. Plus this grow is going to be over fairly soon (1 week left on one plant, probably 3 on the other one)

I'm not sure about your climate but here, in the winter, it is EXTREMELY dry. my soil dried up from a flush in 4 days. plus there is about 25% perlite in my mix.

I used testing strips about 3 weeks ago for the Ph... they turned out almost exactly the same as when I tested before transplanting, and the time before that. So my ph seems to be pretty stable.

I also do not use additives, and I do have fans/ventilation.

I'm starting to think its a combination of over-feeding and under-lighting. I don't have the means to add any more light, but I suppose I'll try flushing again soon.

forgive me if this is hard to follow, I'm in a bit of a rush. Thanks :thumbsup: