I have been trying to treat a sick pleco -- we have had him for 11 years. He is in a 10 gal tank alone ~ had a betta in with him for a little bit but took it out when the pleco got sick. He has never been sick before this round. I'm hoping someone can help. Here's the story ~ pleco got ich -- i raised the temp and treated with ick attack for about 7 days ~ all seemed good (he started to eat again - now not eating -- then 3 days and these white spots started to appear. I did some online research and figured out this was fungus - a secondary infection which is common after ick. I treated with Jungle fungus tabs -- no effect. (now I've been doing 25 - 50% water changes weekly ~ except during the ick treatment period) -- did the 50%water change before the ick attack and then not again until after treatment. Anyway, I did more research - tried the local aquarium store (that told me to change the water and do nothing else). I did another 50% water change ~ pleco looking worse. So now I'm desperate to save him -- I do a complete water change ~ completely wash out the tank, rocks, new filter bits, etc (the water is looking horrible and I'm guessing the bottom filter is a mess at this point regardless of my cleanings). And I treat with Maroxy. continue treating with Maroxy for the last 4 days - it says don't treat more than 5 days. Pleco is more covered - fins are getting pale ~ some of the fungus growths are turning brown ~ I know he's dying and I'm out of ideas, etc. On a side note ~ I've been battling the PH in both my tanks for some time now -- continually having to up the PH. The other tank is clean, fish are doing well -- have a pleco, neon tetra's and skirts in there with a small cat -- it's 20 gal.