Quote:
Originally Posted by monza
Your closed loop would not be used for sump return, it wouldn't be a closed loop then. A closed loop is generally for flow and circulation in your tank with out having to add power heads or vortex style pumps to your DT. A CLS has no chance of back siphoning, and allows use of a low pressure-High Flow pump to provide increased flow and less power usage.
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Got it; thanks. Learn something new every day...