Flowering concerns... day 40ish

This random seed started mid-january its been looking fine till flowering. Now the leaves are turning yellow and falling off all over the plant. Running a bubbleponics system with 2 85w fluorescent lights, one is a warm white 30k, the other is a day light 65k. It is around 75-85 degrees and use the "stealthmicro/bloom" combo along with a tad bit of bigbloom tigerbloom. The question is, do they look healthy and is the leaves falling off normal, seems kind of odd.

Your lighting in my opinon is the culprit. Your really need alot more light, even if you are only growin one plant. MORESO, due to the unknown genetics of the plant, that could be another culprit as well. Some plants really just need a long veg before they will even think about flowering. In the mean time though, I would focus on getting more lighting. If you are sticking with CFLS I would get at least another 200+ watts of 2700K and get it about 2-3 inches above the plant.

Anothe thing you may want to try is to flush your resivor. They really do look odd, and I think its the plant combating its need to continue to flower but not having the necessary light that is required by that strain of MJ. Good Luck and I hope this helps. FIRE IN DA HOLE!

Maybe a lack of N. Do the nutes you are using contain any Nitrogen?

Lower leaves, main stalk leaves turning yellow is almost always N deficiency. I crank my ladies with N far into flowering. Leaves are what make buds not fertilizer. Keeping as many leaves as you can throughout flowering will increase your yeilds. Leaves are how they photosynthesize utilizing nutrients to make sugars! Its all about plant health.