Hypo not working?

[justgeorge]

After an outbreak of ich (of course) in my 240 and a treatment of KichIch that didn't take care of it I lowered my salinity to do the hyposalinity treatment. Takes a lot of water to slowly lower a 240 gallon tank, but it's been at 14ppt as measured by a refractometer for 9 days now. Today my purple tang is really covered. Is this just part of the treatment stage or after 9 days should I not be seeing any more ich? (I know to leave the salinity down for 6 weeks).

I can set up a 10 gallon tank and try to treat him with copper, but I'm not sure if I can catch him in a 240 with lots of LR.

What if it came down to treating the whole tank with copper? The live rock doesn't have anything growing on it really, it's just full of bacteria but no corals. I also have no snails or crabs in the tank. I don't want to stain the tank green either; does copper stain acrylic tanks?

Thanks,
George

 

[BTTRFLYGRL]

I believe you can go as low as 11ppt.
It may be that the ich has not yet fallen of the Tang yet..once it falls off, it should not return

You really should have removed the Live rock, hypo will kill all the life on the rock turning it into plain old base rock. Don't use Copper. Sand will absorb the copper making a proper copper reading difficult . The sand will continue to leach copper into the tank even after the treatment is done. It will also destroy your rock and biological filtration causing ammonia spikes etc...not worth it

 

[justgeorge]

Thanks I'll drop the salinity down a little lower. There is no "life" on the rock other than corraline so I left it in the tank.

I have a crushed coral substrate, but for now I'll skip the copper unless others chime in.

BTW, I've also had a UV sterilizer (Coralife Turbo-Twist 6x 18 watt) running for a week now too.

George