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I'm gradually replacing my crushed coral substrate with sand and placing some live rock in my tank (also gradual). Is there anything I need to be aware of as far as chemical parameters, lighting, etc. to make sure my live rock and sand stay 'live' and beneficial for my tank? I'm running a...

I'm going to change out the crushed coral for sand in my 75g tank. I'm also trying to add some live rock in there, but this question is about the sand. I am SO over the cc. I read that I can do it gradually by taking some of the cc out and putting sand in, then taking out more cc and putting...

I'm considering changing from a 75 gallon to a nano tank. I just have 2 clown fish so I don't think it would be too hard to do that. I'd like to have some live rock and maybe some corals. I realize I need to watch a smaller tank closer as things go downhill faster, but I'd like to move the...

Kind of weird, huh? Usually my nitrates are around 20, which is basically what's in my tap water that I use. (I know I need a RO/DI, but can't get one yet.) I did a 10 gallon WC in my 75 gal. tank yesterday afternoon and when I tested the water today, my nitrates are much higher. The nitrate...

After much reading, most people seem to like the AquaC skimmers, so that's what I'm looking at - unless somebody has a better idea. :D I'd like one that goes in my wet/dry sump (praying it will fit and I'll have room to get the collection cup out), so I'm looking at the AquaC Urchin. I think I...

Well, it's about that time...I'm itching to add another fish. However, after adding our last fish, the powder brown/white-face tang, I read that this should be the last fish you add as they are so sensitive to changes in their environment. Nice. LFS didn't mention that part and I'm pretty...

I have a mated pair of perculas. The smaller (male) has been laying on top of a lava rock today. This is the first time I've seen him do it, but my husband says he saw him doing this a couple of weeks ago. He's seemed fine, he's eating, etc. But he keeps going back to the rock, swimming in...

I hesitate to call my tank 'established', but it is nearly 6 months old. Does that count? You can see our tank stats in my signature. I have a question about adding some live rock to my tank. I am having live rock envy. I want that neat color and the cool critters. But is this a bad idea...

Hi all! I think this is my first time posting although I've been hanging around for a little while. My tank is almost 6 months old. I currently have 3 fish and some snails (see my signature for the full tank stats). I've got quite a bit of green (non-hairy) algae on the glass, substrate...