how many times a week are you doing water changes? Maybe start doing 25% weekly to manually export the nitrates.
I wouldnt start switching methods all of a sudden - may end up doing more harm than good. Cut back on the vodka dosing and check your ro/di to ensure TDS is at 0.
I do about 10 to 15% of weekly water changes, I may start doing 20 to 30 My ro/di it's at 0ppm I have a TDS meter, thanks!
06-02-2011, 12:00 PM
My ro/di it's at 0ppm I have a TDS meter, thanks! 
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