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Literally. Anyone care to guess how many lbs of rock are in my tank and how much I need? It's a 90g 48x24x18. Crappy cell phone pics below. The reason I ask is that I want to take some of the rock out and remove my skimmer but want to still provide a healthy environment for the creatures. I...

I have some small Yellow Polyps (2 actually) and a small short tentacled plate coral (about the size of a nickle) that I have been feeding mysis every 2 or three days. I read somewhere that feeding the polyps will make them spread faster and I just like watching the plate coral eat. I'm...

I inherited an existing 90gal tank 48w x 24h x 18d and the previous owner said the bulbs in the light were almost 2 years old so I thought I should change them. Before I get some new bulbs I thought I would check here and see what opinions were on what I have now and what I should get. The...

I have 2 blue/green Chromis and 2 Percula Clownfish in a 90gal and am a little concerned about one of the Chromis. I got the tank and fish a couple months ago from someone who had it going for a couple of years and after we set it up at my house all the fish seemed pretty happy and were eating...

This reddish stuff is growing on just one of my rocks. It doesn't seem to expand beyond its established borders but sometimes it gets a hole in it from a crab or something and will heal back up after a while. Good, bad, neutral? Does it come in other colors and can or should it be transferred...

Found 3 of my snails having a secret meeting on top of a powerhead. Anyone care to venture a guess as to what they are up to? I'm also very curious as to how they all knew to meet at the powerhead. Thanks.

I've looked at hundreds of Goby pictures but can't find any that look exactly like this one. I would guess it's a Diamond Watchman but it's brown not orange and the markings look a little different to me. What do you think? Thanks!

This little fella was in the tank when I got it and I was told it was a plate coral but that was all the info I got. It was sitting on a rock but kept getting knocked off so now it's just been sitting on the bottom of the tank but seems happy. Sometimes it blows up like a jelly fish or else it's...

I got a used but already established glass tank a little over a month ago but over the last few days I have noticed salt crust creeping out of the plastic trim around the bottom. The crust starts right at the corner and goes about 2 or 3 inches along the trim and about 1 inch up the glass. I...

Hopefully these things aren't bad as they are all over the place. They are little white tubes on the rocks and have what look like single white hairs coming out of them. It looks like there are black rings on the hair as well.

I got an existing tank from someone but didn't get much info on what was in it. I was hoping someone could help me ID what I have so I could do some research on how to take good care of them. Thanks! Coral 1 Coral 2 Corals 3 & 4 Coral 5

My wife got me a saltwater tank from a friend of hers and they delivered it last night from about 3 hours away. The set up went well asides from getting very wet and the horrible smell. 2 of the fish didn't survive the trip, a Yellow Tang and something with stripes (I forgot what they called it)...

A friend of my wife is giving us their saltwater set up which consists of a 90gal tank, all the hardware, a few fish, live rock and some corals. I had a big Chiclid tank in the past but never saltwater so I started reading all I could on here to prepare. I have a couple of concerns that maybe...