Originally Posted by smokeshell

Hey, feeling a bit noobish, but I'm having problems getting my ak47 up to par. The last run I did was with 16 plants, grown to about three feet in height before placing in bloom, using 2 1000w HPS lights that are air-cooled so they stay close to the plants, with co2 supplementation.

I grew the plants in 7 gal containers using fox farm ocean forrest soil. I watered them using distilled water. I used GH nutes, and a few others like purplemaxx and gravity. And yet I could only get about 19-22g per plant??

I noticed the fan leaves started yellowing very early through bloom, maybe three weeks out, and by the time they were ready to harvest most of the leaves had already yellowed and dropped.

The current batch in bloom was experiencing the same thing with the leaves yellowing too much and too soon (it seemed), so about four weeks through bloom I tried to rule out too little light and added 2 more 1000w HPSs (albeit I'm running about twice the number of plants which are shorter than last time) and I added an 8" inline fan to bring in more fresh air (even though I'm already supplementing with co2 from a tank).

The room is aproximately 350 sq ft although I've got the 4000 watts of lights concentrated to a 45 sq ft area in the center. I'm not using anything for reflecting and downsizing/compacting the actual grow area, I understand it would help but I feel like that shouldn't solely account for getting less than an oz per plant.

For the current batch in bloom, which is almost ready, I have been feeding weekly using GH 3 part plus floralicious bloom, floral sweetener, superthrive, hygrozyme, protekt and diamond nectar (for the first few weeks of bloom).

The soil is pH balanced to about 6.5, I tested the soil and run off and the pH is fine.... I just don't get it! Any ideas? Thanks