Howdy georges, Check the labels on the supplements that You are using, because the solubility of some of them are affected by the others. For an example, General Hydroponics lists on their feed chart that when using the Armor Si and CALiMAGic together, the Armor Si should be added first. It also states that when using the Flora series that when adding either Armor Si or CALiMAGic, or both, that they should be added prior to adding the FloraMicro.
I hope that this will help You out, and good luck with Your grow.