Just fill it to whatever level you want it at, and then measure the PPM's as you add your nutes. Or the gallon jug thing would work too.
MasterKushy Reviewed by MasterKushy on . How do I measure water for Nut's As I am filling my hydro res for the first time it occurs to me that I have no idea how much water is in the tank. This is important I think to myself. So the only thing I could come up with is to use a smaller tote and measure the contents by what the label says is the volume of the tote. I hope those numbers are volume and not area. I have a much closer water station but not one with a filter on it. I will remedy that soon enough, but out of curiosity, what's a good way to measure my Rating: 5