Originally Posted by Rossij101
I have been using mineral water to top up my tank for a while,but I noticed on the back of the bottle jt reads nitrate 29!!!! This is bad no?? My Lfs
said topping with mineral is good !!
Here in Florida there are 4 types of water on the shelf at the grocery store, they are (by label):
Drinking water: RO
processed, minerals added (for taste).
Spring water: Carbon filtered, ozone treated.
Mineral water: the fanciest and most expensive; I like the flavor of the one bottled in the Czech Republic, but only buy it once every couple of years since the drinking water is 1/20 the unit price. Basically treated the same way spring water is, just comes from springs with higher mineral content.
If you want to top off salt water and you're closer to the grocery store than your LFS
, use DISTILLED.
Why? Because the evaporation point of most minerals is higher than H2O, or in other words, most/all of the minerals WON'T evaporate, so you only want to return the part that does... pure water.