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Old 12-05-2012, 02:14 AM   #4
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Originally Posted by jmowbray View Post
I use 100% Ro for my planted tank. Never had any issues. I used to do 100% RO/DI but got tired of remineralizing it.
I am guessing you have a smaller tank with an active substrate. Also dosing EI with gh booster will help, but I guess you will quickly deplete your active substrate. On a large tank you will have issues if you use only ro/di unless you dose gh booster and some sort of k2co3 to increase your kh (clearly this is dependent on the substrate)

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