Aragonite sand is considered the best. It is a fine coral sand as opposed to silica sand. You can test it by mixing it with vinegar, it should fizz if aragonite. Although opinions vary, 4-5" depth works good and you should have a lot of water movement in your tank.
Quick question. Any of you guys/gals running south down having any issues with HA? Havoc I bought a bunch last time for the setup of my 180. I am starting to get HA someone mentioned they got it running southdown. I don't think its the issue but figured I would ask.
cool.. just wanted to check. I knew that I had not heard of this before but someone had mentioned it in another forum. I have an outbreak right now. trying to pinpoint the source.
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