Dechlorinating

[Delphinus]

I'm actually going to try RO water in my freshwater tank because of the phosphate reading.

However, I have YET to get a phosphate or silicate reading in my reef tanks. The oldest tank is >4 years old now. Water straight out of the tap for all this time for topoff and water changes. So where is the phosphate and silicate going? My theory is that if there is any being imported into or produced within the system it is being eaten up pretty quickly, maybe by the softies (maybe that plague of blue mutant mushrooms is good for something after all).

I don't doubt that in some places going RO is an absolute necessity.