Hi everyone i was wondering if any of u have any advice my 70/80 litre fish tank keeps getting green water and it smells mouldy. Ive done 25% then two 50% water changes over a week as advised by the local fish shop. However it has still gone green i had really clear water for a week after the change although it was clear green but had no smell. I dont know what to do. my fish are happy and heathly i have 5 mollys 1 loach 4 male guppys and 1 alibino catfish. I have a good filter the correct size for my tank and a good heater. I also make sure aquasafe goes in with the water change. Which leads me on to my next problem. The chlorine levels in my water are high i did a strip test of my own drinking water and it told me to do a water change!! I put the aquasafe safe in let it settle and it still tells me to change the water. Please help this is driving me nuts.