ok substrate test inprogress.

[StirCrazy]

Ok I tested it befor wwf got good.. the sugarsand is still like a 1/2 milk 1/2 water mix but the dolomite is crystal clear.
PH for the sugersand 8.0
PH for dolomite 8.1
I am using a Hagen kit (all I had available) and I think they tend to read .1 or .2 high from my expereance.

the water I started with was very soft and acidic so I expected a large increas in both samples but I think they are settling out.. also I have about a 40/60 split between sand/water. don't know if that matters though...

Steve