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I have three 600gph Hydor Koralias. One blowing length wise on the back of the tank and the other two blowing width wise at an angle towards the front of the tank. Too much flow?

Thats good info. I heard that running the filter 24/7 can contribute to higher nitrates. I do not have this problem, at least not at the moment. Any feedback on that?

Penguin BIO-Wheel 170

Whats the best way to clean the filter? I usually just rinse it once a month with fresh water and scrub it with a toothbrush. I heard vinigar is a good way? Not sure though.

How many people run their filters 24/7?

Thank you so much for the help.

Do you think my nitrates will go through the roof?

Not to sure what I should do with my current sand bed. It's 3in deep and far to heavy to move in the tank. Should I scoop it out and re-use it? Any advice would be great. Only moving 5 miles from current Location.