Has anyone ever cared to send in a water sample of their RO/DI water to see what, if anything, is making its way through the filters? Especially when the filters are a bit older and there's great chance some things could be making their way through? I've noticed that when my RO filters get close to the 6 month mark, my corals start losing color and look a bit PO'd. The dual DI reactor resin hasn't changed colors and TDS is still 0, but I can tell something has got to be making it past the DI resin based on my SPS health. I've been looking into drinking water test kits like these.
Has anyone tried this in the past? I'm curious if the sensitivity of these tests is adequate enough for what ails my SPS. I have a friend with a large system and his coral is experiencing the same issues I've seen with old RO filters (extruded acro filaments, paled colors) with 0 TDS and everything else in the system looks normal. I'm convinced there's something in the water that's not registering with a TDS meter that penetrates through RO/DI when the RO filter blocks become old. Thoughts? Am I wasting my money if I buy one of these test kits?
Has anyone tried this in the past? I'm curious if the sensitivity of these tests is adequate enough for what ails my SPS. I have a friend with a large system and his coral is experiencing the same issues I've seen with old RO filters (extruded acro filaments, paled colors) with 0 TDS and everything else in the system looks normal. I'm convinced there's something in the water that's not registering with a TDS meter that penetrates through RO/DI when the RO filter blocks become old. Thoughts? Am I wasting my money if I buy one of these test kits?