Hi, I have just added my first discus to my community tank and would like to know if too much waterflow is undisirable for him? Tank is about 440litres,Filter/pumps 1 x 1000litre external canister,2 x powerhead 1000litre running 2 x undergravel filters. Tank has big driftwood log in it for him to hide,he seems happy enough so far.I'm new to discus. any help appreciated, cheers