So I am working on getting the salinity in my brackish tank to where I want it, for the mudskippers I'll be getting in a couple of days. I have two hydrometers, one's the floating tube kind and the other's the swing-arm kind, and they give me different readings every time; that is, they don't agree with one another. I don't like either one of them. To use the tube, I have to put water from my shallow tank into a tall bottle. But on the swing-arm, the numbering starts at 1.012, which is a little higher than what I need (1.003-1.010). I'm really lost! I know the SG doesn't have to be exact or stay super-constant for mudskippers, but I want to be able to know for certain that I'm in the proper range at all times. :help:
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