When you put 2.5 tank do you mean two gallons and a half? That is really small. Perhaps you ought to read up on the truths about bettas and get him a larger tank. I would never put my betta in anything under 10 gallons. That being said obviously the other suggestions about the levels in your...
I had a outbreak of itch in my 25 gallon tank. It decimated all but two zebra Danaebo's, a frog and a snail. I have removed the snail and frog into an established and10 gal and I am about to get rid of the last two fish. I have emptied the tank and boiled all the decorations. I removed all the...