crush coral substrate

[Birdow]

I would like mix a 20lb of this with the 60lbs of live sand in my tank. I like the look.

[bavass]

if u like the look go for it, some say the crushed coral can cause nitrates later. Just be sure the get a good clean up crew and some sand stirrers and u should be fine

[mr_X]

the crushed coral will make it's way to the top and that's all you'll see eventually. the larger grains always work their way to the top.

[Sarcothelia]

Best tank I ever saw had a 4" substrate with the first 15-20% being crushed coral and the back 80-85% being live sand. This guy had moorish idols, leopard wrasses, and multibarred angelfish among others in his 500 gallon.

I'm tempted to try it in a 55 later on, though with much less finicky livestock haha.