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I have seen this thing open up in my tank and when I get near to it with my tweezers it goes into this tube so fast you can hardly see it. It definitely is stationary and cannot move from that spot. Only open up Sent from my iPhone using Aquarium Advice

My friend just got a hippo tang and acclimated him for a long time. He tested water parameters on both his and the water the fish came in. It's in a 75 gallon now. It's a very small tang. He keeps wedging gunsel in rock and "playing dead" any suggestions on wat to do? Sent from my iPhone...

I have three blue green chromis that I have in my 75 gallon. They are the only fish I have in their and they won't move from behind the overflow box. They hide there all day long. It's been almost two weeks and they still haven't came out. Any ideas?? Sent from my iPhone using Aquarium Advice

Hey there. I'm planning on starting a 20gal long frag tank. Only want to keep simple corals to propagate for my friends 75gal reef. I really would like some help making a supplies list. I would rather not have to incorporate a sump if I don't have to (trying to stay semi low on budget) any...

My RO system is hooked up to an auto top off in my sump. The float is good and it's not letting water into my tank because it's still full. But the RO system is still producing waste water even though I'm not using any RO water. Is this normal? Sent from my iPhone using Aquarium Advice

Alright this is going to be pretty straight forward. My friend is making his 75 gallon tank into saltwater I would love if someone could give me a list of brands for his equipment. We'd personally like to not have to grow algae in a refugium and also trying to keep price somewhat low. Thanks for...

My friend has a 75 gallon freshwater aquarium with a sand substrate. He has a power head in it right now. He wants to convert to saltwater. Does he have to completely clean out the tank or can he use the same sand? Sorry if some of these questions seem stupid just wanting to know what he needs...

Hey I have a 75 gallon freshwater aquarium with a sand bottom is it easy to switch to gravel without taking out the fish? Any advice? Sent from my iPhone using Aquarium Advice

It may be hard to see but does anyone know what this is. It has tentacles with what looks like hair on them. It hides in the crack and all I see are the arms Sent from my iPhone using Aquarium Advice

I'm planning on purchasing live rock and I don't quite know what to get. I'm under the impression that uncured live rock has more on in but what's the point if most of it will die when I put it in my aquarium. I really need some guidance here Sent from my iPhone using Aquarium Advice

Hello I've recently acquired a 10 gallon tank. I have another very successful FW tank. For my new tank I plan on making saltwater with two ocellaris clowns. The hardware I'm using is a 30-45 gallon filter, a rio nano protein skimmer, a koralia nano power head. All I am asking is should I get...

My friend recently got a 75g tank and we decided to put sand as the substrate. We r gonna let it cycle for a few weeks but we'd like some input on stocking ideas. He already has two gourami he has in another tank he wants to put into it. Let me know about any other ideas

I have recently purchased a 55 gallon aquarium kit and I want a freshwater tank that is as vibrant and eye catching as a marine aquarium. I've gotten used to my 20g but all I have are mollies and platys and I want something different. Even if I have fake decorations I would like some ideas of...

It's my first time going saltwater. I have had success in fresh but am looking for a more advanced aquarium. I'm thinking about doing a nano tank. I would like some guidance on size and equipment. I understand the difficulty of nano tanks but money is a major factor. Any feedback will be...