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Thank you so much for the ident! It *does* grow like crazy; I keep trading pieces away. I've got a patch of it growing between some cabbage leather and a giant ricordia mushroom that seems to be contained by the corals around it, but when left with space to spread . . . And yes, the square...

Have some frags for trade: A bunch of Kenyan Tree Coral, most about 2", and some green and hairy mushrooms (some in the picture), generally single polyps: A huge mat of something I can't identify (pictured below behind the square anthias) that I am willing to break into more manageable-sized...

The problem is that I can't get my hand down to the bottom of the tank. I need a magnet or something on a strong stick.

I have some very stubborn algae growing on the walls of my acryllic tank. My water is pristine and there's no algae on my reef (except coralline). I probably have a hundred snails but they don't get this stuff off, and it's starting to interefere with the viewing pleasure of the tank. I recently...

I have a small frag of the most beautiful bright pink candy coral I've ever seen and a midsized piece of Anphilia on what looks like a very interestingly shaped bit of figi rock. Also a small bit of leather. (sorry, no pics right now). Looking for some simple stuff... zoos, button polyps, maybe...

Thanks for the suggestion. I went to the local shop and they recommended Wardley's Sodium Biphosphate, but in extremely small doses (half the manufacturer's recommended) with both time and testing inbetween a second dose. Since the livestock don't seem the least bit stressed, I agree with the...

No. The Alk is fine, and while the Ca is high, I've been adding a cleaner crew and some corals that will start to consume a lot of the Ca in the water. That ought to bring the buffering capacity down a little, which I think will be a good thing, because right now it's so high that I can't even...

My pH is about 8.5, my alk is about 250 ppm, and my Ca is about 500. I'm having some very very minor precip (just on the suction cups that hold my heater and filter return). The rest of my numbers are good, and my fish and corals all seem happy, but how do I bring my pH down safely?

Two days ago, I removed about 99% of the water from a 3-year-old system that I inhereted and replaced it all. There was nothing in the system anymore but about 150 pounds of live rock, a 2" sand bed, 2 tangs, a pajama cardinal, and a couple mushrooms. Everything else had long since died off. I...