Ok, so this has been happening for afew days but I haven't had internet for afew days . My problem is that all around the edges of my leaves are turning yellow and the yellow is slowly making it's way inwards the leaves. I'm guessing it's some type of deficiency. Though I gave them some 1/4 strength Fox Farm Grow Big yesterday and gave them nutrients last friday yet they don't seem to be absorbing the nutrients. Which I guess would mean I have nutrient lock out... I P.H.'d the water and it said the P.H. was around 7.4. So would the problem be some kind of nutrient defeciency?