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Unread 05/22/2014, 03:48 PM   #3
Randy Holmes-Farley
Reef Chemist
 
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Join Date: Apr 2001
Location: Arlington, Massachusetts
Posts: 86,233
I show what different sizes and types of water changes can accomplish here:

Water Changes in Reef Aquaria
http://reefkeeping.com/issues/2005-10/rhf/index.php

I generally recommend about 1% daily, but more isn't a concern and is likely beneficial if you have good quality salt water. Your 5 gallons daily is probably about 3%.


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