Fish4dawin
Fish Addict
Hey all, Iāve been thinking about using RO water in my 29 gallon tank to help soften my GH so Iām able to have fish such as corys and tetras and so on. Now my question is, how much RO water is needed to bring down my GH. Currently my GH is at 290ppm, meaning I can only really have rainbowfish and African lake cichlids. Do I just need to add the RO water then test the GH, and go by how much it has dropped?
Many thanks,
Ev
Many thanks,
Ev