What kind of substrate for 7+ inches deep?
I am considering a pretty dramatic slope in my tank - something like 7 inches in the back to maybe 2 in the front.
I had been looking at a dirt tank but as I understand it something like 5" of soil with a 2" cap of pool filter sand in the back would be a problem with the depth of the soil. Should I instead be doing like 3" of sand, 2" of soil and another 2" of sand ?
I've been reading everything i can find, and most seem to suggest 1-2" of soil as a max.