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My girlfriends parents have a cold water fish tank. It's 19 litres so it is only small. They have what I think is a black moor in there. Is this tank too small for a fish this size and what would be recommended size tank for this fish? They have said he is not feeding properly and I believe...

I use Shirley Aquatics for my water. I get both fresh water and salt water from there. My light is on for 10 hours a day. It comes on at 1pm and turns off at 11pm. In the day it's out of direct sunlight in a fairly dark room. That's good that it's healthy. It's not the easiest to clean you are...

Hi All I've got an MT50 marine tank and I've had it up and running since May 2013. Everything has been nicely settled in but over the last 4-5 month I've have been getting lots of purple build up on the edge of the tank (see picture) There has also been lots of green growth has started...

I haven't tested my water since doing the change but I normally get it tested at my local centre. I also get my water from there as well. I get salt water and fresh water. When I do my water change i top it up with salt water and then if the level gets low top it up with fresh water.

I floated the shrimp for about 30 mins then added small amounts of my water in before moving it across. I didn't mix the water. Just threw it out once the shrimp had acclimatised to the tank

Hi I have an MT50 marine tank with 2 clowns, royal gramma, blue striped goby and a cleaner shrimp. The tank has been up and running for 10 months. Yesterday I added in a fire shrimp and I woke up to see the water had gone slightly cloudy. To try and resolve this I cleaned out all my filter...

Moved them yesterday out from under the live rock and now I have moved it on top of the live rock closer to my light. What would be a good light to upgrade too ? Should I increase the time I have the light on for if the coral lives of light ?

The tank is only small 80 litres so just under 18 gallons. The light is the one that came inbuilt with the tank. The tank is Aquaworld MT50-marine. I get my water tested at the aquarium centre I bought the tank and all my stock from every two weeks and these are the results they gave me last...

I added a coloured button polyp to my marine fish tank about 2 weeks ago. It appears all shrivelled and looks like it is dying. Can anyone advise or help me ? It is my first and only coral in the tank at the moment. The first image is it when I put it in the tank and the second is it now. It...

Yeh that's basically what he does now. Comes out for feeding then goes back behind the live rock.

Put my new fire shrimp in my tank on Sunday and he just seems to hide under my live rock. Is this normal ? And is he likely to come out more as he gets used to the tank? Thanks

Hi I have a 80 litre tank that has been up and running for nearly two months. I currently have 2 clown fish and a royal gramma along with a cleaner shrimp and the usual clean up crew of hermit crabs and snails. Has anyone got any suggestions of a final fish I could add to the tank? It needs to...

That's good then it all sounds very normal. He has been coming out much more this morning but still stays close to her hiding place.

I have just added a royal gramma to my aquarium and she keeps hiding inside the small house in the tank (see picture). She will poke her head out and sit in the door way but rarely go any further out. Is this normal and will she come out further as she gets used to the tank.? She went in...

Haven't get any food to put in at the moment but when I do I will try that straight away. Didn't manage to see them last night hopefully food will bring them out so I can get a better picture

They blend in with the live rock really well. I would say more of a grey colour but its hard to tell. I have print screened a bit of the video and circled the crab to give a rough Idea. Hopefully I can get a better picture later.

It's hard to say a colour. They blend in with the live rock really well. Sort of like a grey colour. I have print screened the video and have and put a circle round the crab. It's hard to see as it is so small but gives you a very rough idea.

Thanks I will try and get a picture tonight and post it. As I said they are only very small. Less than 1 cm so are hard to spot!

I have had my tank set up and running for three weeks now. It is a marine tank that holds 11 gallons of water. I have 7.5kg of live rock in it and have just added some cleaner crew 5 red hermit crabs and a few snails. Last night whilst watching the tank very closely I noticed two extremely small...