How much water have you made so far? I've made about 70 gallons with mine and the TDS
is getting up to around 12ppm. So if you haven't made much water with it then it's more than likely the DI
resin. I got DI
resin for $18 on ebay. It's not that bad compared to buying the whole filter.
125gallon - 3 Giant Danios - 1 7" Jack Dempsey - 1 5˝" Green Terror - 1 9" Lutino Oscar
65RR - SW - 30g Sump w/fuge - 40lbs MI LR 30lbs Base - 4-5"Sand Bed - 2 false black perculas, 1 six line wrasse, 1 peppermint shrimp, 6 zebra hermits, 6 blue leg hermits, 6 nassarius snails, 6 astrea snails