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Old 01/09/2008, 09:54 AM   #2
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Join Date: Jun 2003
Location: Ontario, Ohio
Posts: 4,935
Unless you have a tear in your RO membrane the difference between RO and RO DI is rather minimal. For the most part ions passing through the membrane are sodium. Your issue may be more phosphate based. But phosphates should rarely get through the RO membrane.

I would change out the lighting on your chaeto first and see if that helps. It may just be the chaeto isn't getting enough light to out compete with your new lighting on the tank.


Current Tank Info: Waiting on wife’s approval.
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