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How quickly could a clean up crew remove the evidence of a dead fish? My clown fish has completely disappeared. I'm devastated! My tank is a nano tank so no where to hide, he always comes out when I open the lid for feeding time. He was there yesterday . Clean up crew- 2 crabs , two turbos, a...

Can anyone please identify this (?coral) with brown tentacles which I have adopted as a bonus addition to tank along with new leather coral? Thanks!

Introduced first BTA today. Though I had read enough and that it would all be simple.... (Naive!) Lights are off and power head off for now in attempt to allow it to settle. Problem is that it keeps falling off rocks and landing on its side or upside down... Should I keep picking it up or will...

Introduced first BTA today. Though I had read enough and that it would all be simple.... (Naive!) Lights are off and power head off for now in attempt to allow it to settle. Problem is that it keeps falling off rocks and landing on its side or upside down... Should I keep picking it up or will...

My marine tank is 5 months old. I spied this colourless beastie on one of my finger corals just as I turned on the lights. Looks a bit like a spider, circular head / body with long tentacles. The tentacles have rings round them. Difficult to get picture as hiding now but you can maybe see a long...

I added a 4 stripe damsel to my tank today, previous inhabitants - 1 clown fish and a blue damsel. Blue damsel only been in for about 4 weeks but is totally pestering the new damsel. I know damsels are renowned for being aggressive little monsters- which is why i chose another damsel- will they...

My tank is just over 4 months old so I'm still just a baby and need some help! I'm getting quite a lot of green algae spots on glass and on bed of tank (not hair algae) - this is despite a big clean up crew including a sea hare. ( see pics) I do have my lights on for about 12 hours a day but I...

Anyone have a boyu tank? Mine is only 4 months old but the blue light won't come on by itself anymore when I press the left hand side button on lid. (lights up with white light during day) Any suggestions? (it might be problematic to send the tank back...!)

Something has bred in my tank .... Turned lights off and discovered a small mollusc climbing up the glass. About 5-7mm in size. I have turbo snails, one conch who has been lonesome for 3-4 months and also recent addition of a sea hare. I'm guessing either sea hare was pregnant when I got it (?)...

I bought a finger leather coral about a month ago. Was looking back through pictures and have realised that it has changed from a brown-beige colour to more of a pinky brown colour. Is this a reflection of nutrients in water / light levels ? Which colour should it be!? (it is not in the middle...

As anyone got a sea hare in their nano tank?. I have bought one to clean up the algae which appeared when I was on holidays (and programmed the lights for too long !) I think he is pretty cool looking though and don't want him to starve! Do they scavenge fish food- is there any other food I...

As anyone got a sea hare in their nano tank . I have bought one to clean up the algae which appeared when I was on holidays (and programmed the lights for too long !) I think he is pretty cool looking though and don't want him to starve! Do they scavenge fish food- is there any other food I...

Can anyone tell me the proper name for this marine sea slug / snail? Any interesting facts also welcome. He is apparently coral friendly and tends to stay on the sand. Thanks !

Spied this beastie coming out of my coral at feeding time today, looks like a centipede? Tank only 8 weeks old. Anyone recognise it / have any useful info on it for me? Thanks! Seems pretty timid so hoping and guessing it's harmless.

I bought a red seastar yesterday for my tank, which is pretty new but fully cycled. He is just hanging about the top of the tank partly on the side and partly on the water surface. Is this just a favourite place for them to feed or does it mean I'm lacking something in my tank ? Thanks for any...

Does anyone have / keep empty shells in their tanks for their clean up crew? I have a hermit crab, conch and turbo snail. I believe hermit crabs quite like to change shells. Does it restrict their growth / harm them by not having a bigger shell to move into?!

Help please! My tank is four weeks old and everyday I have a new coating of diatoms over the glass and back wall. I know it's a natural part of cycling - is it ok to keep cleaning it off or should I just leave it? Did a water change yesterday. No help.

I'm just setting up my first marine tank- its 54 litres (12 gallons for those in the states) . For clean up crew I have 1 conch, 1 turbo snail and 1 hermit crab. Does that sound like an appropriate amount ?

My tank is four weeks old, has live rock, clean up crew, ammonia 0.2, nitrites 0 and nitrates <10ppm. I am getting brown deposits on the glass / back wall which I understand are diatoms. I have been cleaning these off daily as feel they are unsightly (!) but should I be leaving them? The...

Anyone know what this coral is? Any interesting / useful facts about it? Thanks for help!

My tank is just 3 weeks old. I have live rock, a turbo snail, strawberry tipped conch and a blue legged reef crab in it along with a piece of hard coral. No fish yet obviously . What type of food should I be using? I'm putting drops of coral feed in and my local shop advised using brine shrimp...

I'm new to this tank- the instructions are awful! Can anyone tell me if this pipe should be hanging outside the tank or does it stay within the chamber / under water? When it is hanging outside tank my protein skimmer is bubbling over into the main tank. Thanks for any help !

Does anyone have this tank? Just bought it 3 weeks ago- instructions awful!! This inlet pipe for the protein skimmer - should it be hanging outside the tank or within the chamber? I've had conflicting advice from shop assistants. When it is hanging outside tank my protein skimmer is bubbling...

Hope this picture attaches. Can anyone help by telling me whether this inlet pipe should be hanging completely out of tank to air or sitting in the water? The instructions with the boyu tank are AWFUL!! I've had conflicting advice from two shop assistants . Sigh!!

I'm a complete newbie to marine aquariums. My aquarium is 3 weeks old. I was persuaded last week to replace the foam in filter with pieces of live rock (boyu TL450) Do I need to remove them and clean them when I am cleaning the protein skimmer and other bits and pieces ??