[JustOneMore20]

Sorry! I meant to answer that question in my post above, but I got sidetracked on the planting....lol.

You can just put the dry ferts right in the tank (that's what I do) or you can mix with some tank water if you want. Either way works. Some people even mix them up in 250 or 500ml bottles, by figuring out how much to put in and then how much to dose, but sometimes it doesn't mix well and settles and you don't know how much your adding. I prefer to dose directly into the tank.