03-14-2013, 08:38 AM
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Originally Posted by bohmert
So no reguim nothing else. Wouldn't you need to do water changes often?
Water changes are a method for reducing nitrates in home aquaria. I do regular water changes in my FW tank because it is a basic tank with no plants to eat up excess nutrients.
In Marine aquaria, the most I ever do is change 5-10% every other week to replace trace elements. And if I skip a WC, no harm, no foul. The 1.5-2 lbs of Live Rock plus the 4-6" Deep Sand Bed harbor an anaerobic bacteria that completes the nitrogen cycle and turns unwanted Nitrates into Nitrogen Gas that leaves the system naturally. The Protein Skimmer removes any Dissolved Organic Compounds (fish waste) before they have a chance to break down into Nitrates and Phosphates.
So large, regular water changes are not really needed, and canister filters are (by sheer function, end result of a canister filter is nitrates) a detriment to a Marine system.