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Found this just growing in my sand. You have to look closely its kinda clear.

Looking to switch to black sand. Do I need to buy live black sand? Can I just use black substrate? My tank is already well established, just want to switch, also have tons of pods, any ideas on how to switch without shocking the system, or losing all my pods? Only have one blue damsel, and...

After hurricane Isaac, I lost most of my livestock, but for more corals and fish. The zoos and buttons didn't stay open. They shut for a few months and update my lights. Started opening and have been opening for about 2-3 months now, but haven't been spreading. I have one colony growing...

Received this coral free. Unsure if you can see in pic but each head has two bumps on it. Bumps only show when they are open.

My xenia has been disappearing off this rock and can't figure out why. Did notice this thing in the rock.

I have a small frag of 8 polyps and want to make it grow at maximum potential. What can I do to do this? Also, they are not opening fully. All but the fingers are extended. Any ideas? They have what I think to be a mild flow and are at the bottom of my 55g tank about 18 inches deep or so...

I know you should have warm white, cool white, and blue, but could I do uv and maybe red or green? Would this cause more algae or kill something or cause harm?

The guy i got it from told me this is pulsing, but never seen it pulse before.