Growing some spring delights

Super Kush is doing well. The new leaves are not showing signs of problems, so hoping the soil mix is better balanced now and no hot spots (I did go a touch crazy adding minerals and shit directly into the soil). The CF-KYU whatever it is, is a week behind the Super Kush, and gone a bit gangly, but sure it will sort itself out. I think I have diagnosed my issue, iron excess. My leaves are yellowish with brown spots, and I did add a tablespoon (approx 30mg) of Iron Sulphate to the soil mix. I think I shall irrigate with just ph water for a week and see if my trees sort themselves out. Either way, carry on and learn from my experience..