Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
I mix mine wet, then use a syringe without a needle to dose. Largest tanks need a turkey baster. I am working on mixing stronger batches so I can dose less. Each batch will last longer that way, so longer between mixing a new batch.
I mix macros (N, P, K) in one bottle, micros (CSM+B and Iron) in another bottle. Do not mix phosphate and iron. I have seen tests that show even dosing these 2 dry at the same time (few minutes apart) can cause them to precipitate, making the iron unavailable to the plants. I dose macros and micros on alternate days.