i think i have managed to get rid of the dreaded whitespot the clowns have been clear this week so give a last dose on monday and cleaned the tank today they look so much happier this week i have also put carbon in the filters to clear the last of the meds and i have bought a uv sterilizer to make sure everything is ok i must say it came yesterday and i put it to go and the water is a lot clearer as the tank is deep i was having a lot of alge even though i have plants in the tank my plec keeps wrecking them he also rolls the moss balls into his cave