Adamas":2nstt0bk said:Guys how can I check how horrible is my tap water ?
Fastmarc":2pgeq8df said:Hmm...
It's not just about TDS.
There are a number of compounds that make it through a RO membrane that we as reefers should be concerned about, but the DI resin takes care of. These include ammonia (NH3), hydrogen sulfide (H2S, especially a concern with well water), silicate and CO2.