Over water and maybe sulfer is low?

Well neither Calcium (Ca) nor Magnesium (Mg) are your issues, the main problem is a Nitrogen deficiency! Leaves turning pale green-yellow from the bottom to the top of the plant. The cause to your problem is that you stopped completely with the "Grow" fertilizer rich in Nitrogen, while it's true that the plant needs more Phosphorous (P) and Potassium (K) during flowering that doesn't mean the Nitrogen uptake stops completely! the plant still needs it but in smaller amounts than in vegetative growth. Increase the "Grow" fertilizer to about 1-1.5ml/l, the "Bloom" fertilizer to about 2-2.5ml/l and I'd say drop the "Elemental" fertilizer for now since it's highly concentrated with Calcium it is likely to cause toxicities, try using Cal/Mag additives only when deficiency signs appear (Calcium toxicity may appear as different deficiencies so it is hard to recognize). Hope this helps! Good luck and happy growing :)