Fish Dieingin New Tank

[PBrindle]

hello.

About2 months ago I set up a marine tank from an existing tropical one.

I have a large canister filter (new), power head (new) and heater (new).

I replaced the gravel for marine sand and added lots of live rock.

I have two clowns and a yellow tang + two scooter blennys. Also 3 cleaner shrimps and two snails.

I seem to be losing fish now (they just stop eating then dye) and am losing heart fast. All the water tests are fine and the blennys and shrimps are fine. Just cannot keep the other fish alive.

I thinking about going back to tropical o should i try to carry on. Any pointers that may help.

Many thanks

 

[maidenfan]

hi just a few questions before we can help

when you set the tank up did you use ro water and marine salt, did you let the tank cycle after adding your LR, how often do you water change do you mix it well with marine salt , what are your readings from testing your water,what turnover as far water flow do you have, how big is the tank, how much LR is alot???

 

[ox5477]

Do you have a skimmer? it seems that all marine applications have one. I'm not 100% sure how this could hurt your tank not to have one, but this could be a cause.

 

[PBrindle]

hi just a few questions before we can help

when you set the tank up did you use ro water and marine salt, did you let the tank cycle after adding your LR, how often do you water change do you mix it well with marine salt , what are your readings from testing your water,what turnover as far water flow do you have, how big is the tank, how much LR is alot???

It is a 190ltr tank. The filter is for a 500 ltr tank and a powerhead to move water around. Yes left the tank to cycle with live rock and am using the salt recomended from the shop. Not sure how much rock but it fills about 1/3 of the tank.

Do you have a skimmer? it seems that all marine applications have one. I'm not 100% sure how this could hurt your tank not to have one, but this could be a cause.

No am not using a skimmer as the shop said that I should not use one for the fist six months

 

[Miss Wiggle]

I'm not exactly an expert but I think some things you need are more LR, more powerheads (should have 20x turnover in the tank) and a skimmer, that's probably rubbish about not needing one in the first 6 months.

 

[Chac]

What is your Water Parameters

Any signs of disease

Any signs of bulling or predation

I would defo add a skimmer

What size (Flow Rate) is your powerhead

 

[maidenfan]

as mrs wiggle says you probably need more live rock and more flow at least 20x so you need to be moving at least 3800 litres a hr with combined powerheads and the water being moved by your external. a tank your size deffo needs a skimmer

don't fall into the trap in thinking like i did the external filters your water because it doesn't your live rock is your biological filter depending what you have in there that could be fuelling high nitrates as chac says what are your readings for your water?

in my external i have LR rubble, a carbon bag, rowa phos and poly filter i took out the ceramic media straight away

do you have algea or cyno problems?