Leaf changed color and spotting, help!

Hard to say from the picture but your diary give away the problem, in this case your plant is suffering from Calcium (Ca) Toxicity - Leaves develop Yellowish-Brown spots, tips and margins begin to suffer chlorosis, while leaves remain dark green in color. Lower the CaMg+ to about 0.2-0.5ml/l (consider even stop using it after a few lower dosage irrigations) since your "Bio-Bloom" fertilizer has enough Calcium additives and it is usually needed only when the plant shows deficiencies. Calcium is a micro-nutrient and needed in very small amounts (sometimes the calcium in the soil is enough for the whole grow). Hope this helps! Good luck and happy growing :)