Dt hypo treatment

[Aquattro]

If you have a spare 175 lying around, I'd drain the DT to get the fish out. I've drained my 180 a couple times now and it's not a big deal if you have something to hold the water for 20 minutes. Siphon out with a 2" dia. hose, pick out fish, pump water back into tank. House them in a temp smaller tank where you can manage treatment better.