So I recently bought a used RO unit. The unit came with two sets of new filter cartridges and the membrane was replaced less than 6 months ago but it looks like the two polishers or the DI needs to be replaced. So just a little background info, my tap water comes out at like 40-60ppm nitrate an the GH and KH are literally off the charts. So once I got this unit all hooked up and running for a while I tested the finished product ( keep in mine I need to replace the polisher/DI , along with poor tap water conditions ) and the new readings were 10ppm nitrate and the GH & KH were both at 4*. My question is do I still need to dose Equilibrium since I'm already in the ideal GH & KH for a planted tank? If I do need to dose won't this increase my GH & KH? Jut a little confused. I want to switch over to RO/DI only. TIA!
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