every one is telling me two check the paremeters on my 10 gallon and 20 gallon tanks.why,my fish are doing just fine,and all the fish are helathy.the only problems i have is in the 20 gallon my bala sharks are chickens and in my 10 gallon one of my tinfoil barbs wont eat.but i dont think that has anything to do with the paremeters,does it?