Ugly leafs

just to say it -- most problems are because we give too much. the spreadsheet can eliminate that for sure and an EC measurement would go a long way for overall concentration.

Do you ever look at the leaves without the light or under more normal lighting? e.g. my lights make my leaves look pale on my ggxww strain, but when i take a leaf off and look at it under the sun or cfl etc, it's a nice lush green. Well, you got somethign going on obviously, but the leaf color can help deduce what's going on.. i see tip burn and necrotic spots all over the place - low, high, middle. Most likely pH or an imbalance of what you are feeding. pH can be easily measured and adjusted. Soil should be very forgiving on this portion, anyway. you also have to look at ratios/concentrations... use my nutrient spreadhseet to calculate your total ppms (it does it all, just typ ein %s from label. it is linked in my main GD profile in a comment. it may help you deduce what is going wrong.

You're looking for a ph around 6-6.5, but if you're unsure of your ph there is not much you can do about it now. Your plants look good though. The leaves could be ph problems or could be natural due to nitrogen deficiency in flower nutes. Obviously that's not a problem.