I have a MAJOR problem in my 150gal. at present...Flexibacter columnaris! My H. temporalis got it first. It appeared to look like a bite on his back, but it pread quickly and is now a gapping lesion down his side! It has spead to my large pearsei, and 3 severum. I purchased some Maracyn and have been treating the tank with that as well as Pimafix. I've been doing 25% daily water changes and that seems to have arrested the disease. I contacted Jungle products and they turned me on to a warehouse in the Rky. Region that carries Binox. I ordered some and am waiting for a tuesday or Wednesday delivery so I can start a new treatment. My water chemistry is: PH 6.5, Nitrites 0, Nitrates 70-80, Ammonia is low, but my water is relatively hard. How do I adjust my hardness and does this regime sound like a good course??? :sad: