ok, i have a lowryder 2 that is starting to yellow, and some bag seed doing the same, although the yellowing seems to be different. i added 1/4 strength ff grow big on day 11 to 2 lowryders and 1 responded just fine and the other is pictured. i flushed it yesterday and when i did the runoff was a ph of 6.2. the bag seed was watered yesterday with tap water, but not flushed. any ideas on what's going on and how to fix it? a pic of the lowryder is here..... http://forum.grasscity.com/indoor-grow-journals/578123-lowryder-2-cfl-grow.html
Hey there You're PH is too low for soil, I'd start with getting the ph up to the 6.5-6.8 range and go from there. Give it some time to recoup from the stress before doing anything else. Good luck Doin'