Hello,
I have a 240 gallon reef tank that has recently developed a problem with diatoms. I did some research and found that diatoms feed off of silicates, once the silicates are gone the diatoms are gone. So I went out and got a TDS meter and started testing water. My city water is pretty bad having a TDS reading of right around 1000ppm. I then tested my RO/DI water and noticed it was right around 200ppm, which I think is still too high. I recently bought a change of filters for my Kent Marine Hi-S 60gpd and tested that water. The TDS reading did go down but not as low as I expected, it dropped to about 30ppm. I have read that other people change their RO/DI filters when the TDS reading gets above 0ppm. I also checked on the Kent Marine website and found out that my RO/DI unit is optimized for TDS lower than 200ppm. So my question is can I simply put some sort of pre-filter in front of my RO/DI or do I need to get a new RO/DI system? What are my options for fixing this problem? If I need a pre-filter what kind of filter do you recommend and if I need a new RO/DI what brand/model do you recommend?
Thanks for the help!
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