I am often surprised by the dislike for RO
Yes water with its wonderful minerals is exactly what our tanks need.
But I'm in California. A year ago my tap water turned grey, then brown, then yellow. We tested it and the ppm
was like 500+ and we had no idea what the municipalities were passing on in the water. What kind of minerals were in there?
To be safe we began using DI
water and adding minerals we knew were needed ourselves. To control what was in it and to insure it was safe.
I wish I could use tap and save a bit of money. But I would rather not risk my fish.
29g fresh with Betta, Kuhli's, Neons, Denison Barbs, ADF
, Mystery and Nerite Snails.
Some plants: Anubias, Java Fern, mosses and other misc.
8g Biorb with Betta and plants.
10g Mystery Snail Nursery
5g Plant grow tank with Pink Ramshorn Snails