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I had a glass canopy on top of my 15g. AGA reef tank. It was getting dirty (salty) so I took it off, and wow what a difference that made. So much more light got into the tank and the polyps really got happy after that. Now I think I like having the canopy off. My PC light is on mounting legs...

When I pour in some fresh RO water, to top off my tank or to lower the SG, I see a strange effect when the fresh water is poured into the tank... the water looks strange... sort of oily looking as it mixes with/hits the tank water. Does anyone know what that is?

I just talked to my LFS manager. She told me there is a Pom Pom Crab in their display Nanocube near the sales counter, but it's about the size of a pin head and there's no way to find it or remove it (for selling), not at least until is has grown considerably. She is going to contact her...

Okay, my errant little feather duster has resurfaced. He's in his old tube (probably never left it -- just ducked out of sight). I'll have to learn to relax more with the goings on in my reef tank. He did move, though, a little bit. His direction and angle are slightly different from where I...

Okay, I'll just leave it alone and hope for the best. The good news is that my new polyps are so happy! They are just smiling in the current. All open and waving away.

I looked as far inside the tube as my angle of vision would allow me to see and I didn't see anything in the tube. I have not picked him up to look more closely inside yet. I think I'll wait a day before doing that, in case he is hiding in there. I don't want to tick him off more than I have to.

My new gorgeous feather duster that I bought yesterday is AWOL. He was fine last evening and night, but this morning, his tube is vacated and he's no where to be seen. I do have a lot of nooks, holes, grags, etc... in my rocks. Plenty of places to hide... but he's nowhere to be seen. I am...

Okay, here is a fabulous video of a 2.5g. nano tank with a Boxing Crab in it (turn on your speakers because this video is accompanied by cool Spanish guitar music): http://www.zippyvideos.com/862218579125 ... luebastion I stopped at my LFS today for some supplies, and lo and behold, I...

All of a sudden (overnight) I have what looks like filaments of silk hanging off my rocks. Some of the pieces are a couple inches long, some are even longer. Is this hair algae? It's sort of white in color, doesn't look green to me. What is it? And, more importantly, what eats it?

Do they do okay if they lose their anenomes? I read that they put them down when they molt, and then they pick them back up afterwards, but that seems kind of risky. It wouldn't be surprising if they lost their anenomes... I will ask my LFS if they can get one (some). You can keep multiples...

Erik, what's this about a valve? How do you use a valve? I've just been tying knots in my airhose, and it takes me forever (and sometimes more than one try) to get it just right. I've been thinking there's got to be an easier way -- some way to pinch off the air hose to control the flow --...

I just got a gorgeous dark plum colored feather duster. He's very healthy and not shy. My question is... how is it best to place him? I could bury his tube in the sand bed, or put him in a rock crevice/hole. What's the best recommendation??

I really want a boxing crab. Does anyone know where I can get one? I've read up on them, etc... but I gather they are difficult to find. According to Saltwaterfish.com, they are easy to care for. I have also read that they are delicate and would do best in a species tank. I would definitely set...

My first (of two) small reef tanks has finished its cycle period, so I have begun to slowly add critters to the tank. I have two small blue-legged hermit crabs and three white-banded cleaner shrimps. I set up a drip into a small bucket to acclimate them before adding them to my tank. My...

I've heard that fire shrimps are rather aggressive. I don't know about pistol shrimps. Do you hear his noises??

Nudibranches are so pretty, and they come in a zillion colors. Very striking. Unfortunately, they don't survive well in captivity, according to the sources I have read. They just don't get the type/amount of food they need. Here's a neat web site put together by a diver who loves...

Help! My salinity is too high!!! I'm cycling two new tanks (a 10g. and a 15g.). The salinity on the 10 gallon is 1.029, and the salinity on the 15 gallon is even higher than that (it's off the scale of my hydrometer). So, I need to remove some saltwater and put in some RO freshwater? Do...

The other day I bought a fancy new power strip at my LFS. It's called Power Center, or something like that. The packaging says "Perfect for operating daytime/nightime lights separately" or "you can plug in up to four different powerheads and have your own wave-making machine." Okay. Great...

Yesterday, when I was at my LFS, I saw that they had just gotten in a brand new shipment of live rock, so I bought several pieces because the stuff looked really good. I put it in my 10 g. AGA that I am just setting up. There is live sand and live rock only in the tank. Well, now that I have...

Newbie question: Is the refugium used in addition to the filter, or in place of the traditional filter??