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I recently found some dark colored worms in my tank on the hood glass. I’ve found about 6 of them there now, varying in size. Largest one has been just shy of a centimeter. Any idea what they are and how to treat? Here’s a video: https://youtu.be/F1qo_sQ3PwA

I'm seeing little white lines on the glass and in the gravel of my tank. My two guesses: blood worms or snails. They're all over the place right now. Ideas? Tips on getting rid of them? Each line is very fine and about 1/2 cm long. Thanks! -Jessica.

A friend just have me several goldfish that were born while she had her pond fish inside last winter. The parents are those cheap, 25-cent feeder goldfish, but all the adults were orange, white, black, or a combination of those. All the babies are silver. Is there something I can/should do to...

I'm starting up another h. zosterae tank. I've heard conflicting opinions on the best color substrate to use to see the best color in the horses. What do you all think? Thanks!

I have a 16g guppy tank and gave them live blood worms one time, because I had some left over from feeding a fire eel in another tank. It's been a couple of weeks since then. I went to do a PWC and vacuum out my gravel, and BLOOD WORMS EVERYWHERE!! Any suggestions on how to get rid of them? I...

If I put brine shrimp into a tank, but there's nothing in there that will eat them, will they just reproduce like crazy and take over the tank?

I have a Harlequin shrimp, and I need some cleaner shrimp. I'm looking into sexy shrimp, because I used to have some and loved them. Are the Harlequin and sexy shrimp going to do alright together?

I read that, in order to expedite the multiplication of mushroom corals, you basically slice them up. Here's what I read: You cut it from the very bottom of the foot so there's a thin disc left. Then, you cut it into slices, each piece containing part of the "stem." Then place it in LR so it can...

Everyone seems to be asking about lighting recently, and I'm no exception. Will LED lights support zoas and mushrooms? I'm going to have a dwarf seahorse tank, and those are the two corals I've decided to go with. I just don't know about lighting. I'm considering this, but I want to know first...

I have a tank set up for some dwarf seahorses. I ordered my clean-up crew online, but I didn't get exactly what I'd ordered. In lieu of 3 sexy shrimp, I received 3 white-spot anemone shrimp. I've had sexy shrimp before, and I loved them. Of course, the company from which I ordered the shrimp...

I have successfully kept a mandarin in this tank for about 2 years before (he jumped :(). I never gave him anything supplemental; he just ate the copepods that were in there and lived a fat and happy life. I recently rescued a STARVING mandarin from the lfs, and he isn't picking the rocks for...

I'm about 2 1/2 weeks into cycling my tank, and I've had brown algae for about a week now on EVERYTHING. I've taken it off the glass and rubbed it off of some shells. Should I get rid of it, or will it go away on its own? Thanks, everyone.

I'm looking for info on caring for theses 3 kinds of corals: Zoanthids Gorgonians Mushrooms Any websites/info would be most appreciated. Thanks so much!

My tank is currently cycling with live rock. I have the brown algae bloom in full effect right now (not crazy about it, but I know it's just what'll happen). This morning I woke up to find lots of tiny line-looking things in the tank. Any idea what they are? Are they good/bad? Any help would be...

I have three Figure 8 puffers in my tank, and two have these big, round bellies, which is healthy for them. The third had one a while ago, but he's SO scrawny now! I've fed him flake food, blood worms (live and frozen), black worms, pellet food, etc.--I've tried a lot of different types of...

This will be a 10g dwarf seahorse species tank. My tank is currently cycling. I've had about 12 pounds of LR in there about a week now, adding a piece of raw shrimp every 2-3 days for ammonia. Yesterday I added 3 astrea snails and 3 sexy shrimp and 2 types of macro algae to the setup. The snails...

I want to start up a nano reef in a 10-gallon. Is this too small? What kinds of corals and/or livestock should I consider putting in?

I want to start a 10-gallon freshwater planted tank (small, I know, but I'm not allowed to get another big tank). I've never done a planted setup, and I don't know exactly what goes into it. The hood that is currently on it contains the light, so I'm hoping to either get some low-light...

I want to start a 10-gallon freshwater planted tank (small, I know, but I'm not allowed to get another big tank). I've never done a planted setup, and I don't know exactly what goes into it. The hood that is currently on it contains the light, so I'm hoping to either get some low-light plants or...

My fire eel keeps going into the water output--between the cartridge and the filter wall where the water spills out. It makes me nervous having him in there, regardless of whether he likes it or not. I've taken about an inch of water out of the tank so the water line is below where the...