mateski;1080784 wrote: I currently have a freshwater tank, and would like to put together a reef, but simply throwing 100g of water down the drain every week would significantly increase my water bill. I know many people in the area report TDS readings out of the tap at around 100, so I was actually interested in using the waste water for my freshwater tank.
I saw the basic annual water reports, but they were very vague and didn't list many of the impurities (perhaps the concentrations are just too low to note?). The waste water TDS should still be lower than many people's tap water elsewhere so I am thinking it should be fine...assuming there is nothing out of the ordinary in terms of the mineral content.