Yeah its good, try the tech den for all your water treatments they have a few they make in house for aussie water supplies i buy in bulk there super dechlor is 65 bucks for 5 litres treats something like 200,000 litres.Yep i have a canister filter on the way off ebay will be here friday. Everything is so much cheaper online but i gotta wait... will dump the bio load into the canister filter from the internal then run the internal as a powerhead