nwsharksfan
Aquarium Advice Activist
I have a marineland RODI unit that I've had for the better part of a decade that I just started using after a long period of sitting in the garage. After issues with algae I took a look at the RODI unit and saw a couple green flakes (algae?) in the first filter and the color changing resin looked pretty brown to me. I ordered a TDS meter and replacement filters (but not the membrane) for the RODI unit on the assumption that the algae problem was due to an ineffective RODI filter. Well, the TDS meter got here before the replacement filters. I tested the RODI water and it was 2 ppm. Is it safe to assume this means the filter is fine and I should store the replacement filters away for a while? Or play it safe and start fresh with new filters?
Since I have a new toy, I tested my tap water and it was 72 ppm. Filtered water from fridge was 68 ppm (really getting my money's worth from the fridge filter). Tested the water in my tank and it was 728 ppm. Just out of curiosity, is there any established range for what tank water should be?
Since I have a new toy, I tested my tap water and it was 72 ppm. Filtered water from fridge was 68 ppm (really getting my money's worth from the fridge filter). Tested the water in my tank and it was 728 ppm. Just out of curiosity, is there any established range for what tank water should be?