I'm not sure if this is in the right spot or not. Any who, I have a 10 gal tank and two guppies. All nitrite nitrate pH and GH levels are about where they should be for guppies as well as the tank's temperature. On the other hand, my KH is almost 240 when it should be about 20!! I have tried distilled water, adding live plants, etc. I make minimum wage and spend money at the fish store atleast twice a week so I would not like to buy any filters of any sort. Any suggestions? I haven't been adding supplements to my water because it threw all of my levels out of whack. I used to add stress coat and aquarium salt but now only use one dose of salt. Any suggestions would be greatly appreciated seeing that I've been trying to get the tank right for months now