fish dieing

hey everyone

I have posted before abouth ick problem and i was told to feed then good balance of food which i have been doing but it really doesnt seen to be helping. Since then i have lost my powder blue tang and my choclate tang.

Little bit about my tank i got a 150 gallong tank with 55 gallon sump under neaith i got a over 100 pound on live rock and over 100 pound of live sand i got some soft coral and some hard corals as well. i got a c-skim 1800 protein skimmer

i got my water tested yesterday here are the results

PH 7.8
Nitrite 0
Nitratas 20
Amonia 0
Salinty 1.027 How the salinty jumped up i dont know could that be the reason last time i checked it was 1.024 i can seem to get rid of the ick. PLEASE HELP catching these guys is imposible DONT KNOW WHAT ELSE TO TRy

I WILL POST SOME PIC TOMORROW

 

You really need to get the fish into quarantine where you can treat the ich with a copper-based treatment that won't hurt your inverts. Try getting a trap at your LFS if you need to get this done ASAP (and it sounds like ASAP, because fish are dying). Traps are great ways to catch fish. You'll have to keep your fish in quarantine for awhile (weeks) while the ich dies out in the main tank.

 

would the high salinty have anything to do with this? I was told to lower the salinty and raise the temp to 79-80 which i havent done

 

Thats not actually that high on the salinity. One of the biggest dangers with higher salinity is less oxygen in the water. This is an even greater danger as temperature goes up there is also less oxygen in the water but to an even greater degree. Lowering salinity and raising temperature will do nothing for you other than lower oxygen saturation in the water. The person who advised you to raise the temperature was most likely refering to the fact that higher temps speed up the life cycle of ich, but without treatment in the water, this does nothing for you.

 

You can help fish fight off a mild case of ich by increasing temperature and lowering salinity, but I would recommend getting them out of there and into a quarantine tank where you can treat them with a copper-based treatment.

 

i love tangs and they are a great indicator of not enough oxygen, increase flow your tank is big enough so flow may be the problem.

 

The above poster poster brought up a good point- what kind of circulation do you have? I'm no expert, but I do know oxygen levels will drop a lot with higher water temps. Try aiming your powerheads up more toward the surface so you get some rippling at the surface. Greater surface tension= better oxygenation.