I'm to the point of formulating an aquascape for my 150. I already have three nice large pieces of driftwood and 150lbs of fluorite. I would like to Have a nice sized rock or two in there as well. I went to Home Depot to see what they had and came across a couple that looked promising. One was called "feather stone" and the other was "flag stone". I am very leary of what I buy so that I don't upset my water conditions. The flag stone seemed harmless- like it may be some form of sand stone. I have no idea about the feather stone...which of course is the one I like. ANy input on either of these would be helpful. Thanks
-Jamie
-Jamie