I just purchased a powder brown tang yesterday, as I was acclimating it I noticed it had ich. I am not starting the treatment with "HypoSalinity". I was taught how to do this by Linda Close.

I have the tang in a 10 gallon (it is only temperary) it will be in a 29 gallon eventually at the correct salinity to rid the ich. So far I have started the treatment today and brought the specific gravity from 1.025-1.019. This was completed about 2-3 hours ago. I am wondering when I should drop the specific gravity again .005. The fish is swimming constantly and is accepting an omnivore diet. I was told this could be done in a 24 hour period, and I would like to know how long I should wait between water switching.

I also tested my water with these peramaters..

PH: 7.8
Ammonia: 0 PPM
Nitrite: 0 PPM
Nitrate: 0 PPM

The PH is a little low and I was wonder how I could raise it back up.

Hi, and welcome!

First off, your 10g hospital tank is fine for now considering the size of your fish, and it's easier to do water changes, so if he seems unstressed, I'd consider leaving him there. The salinity can be lowered to 1.011, going down 0.004 per day. Then you'll want to leave him in there for three weeks. Keep up with lots of good food including some algae--spirulina flakes, nori from the grocery store (my favorite) etc.

As for the pH, it is strange that it is that low. First I would try aerating the water--this will blow off some of the CO2 which may be your problem. Freshly made saltwater should be 8.2-8.4,, so a water change may be in order as well. If neither of these work you can up the pH with kalkwasser--add small amounts slowly (drip).

You might want to try to figure out what the pH issue is all around in case it is affecting your main tank. Check that pH, as well as your source water. Usually tap water pH tends to be high rather than low, but it's worth a shot.

Good luck!

Thanks for the reply, I was up at Linda Close's house the other day and I mentioned these black spot on the fish that I recently found and the water quality was...

PH: 8.2
Ammonia: 0 PPM
Nitrite: 0 PPM
Nitrate: 0 PPM

Here are some pictures.