Mixing RO/tap before adding it to the tank is a solution most people use. The change in the aquarium needs to be done slowly though.Pilze wrote:So whats the best way to lower the pH and hardness for alkaline water? Mixing R/O and tap for water changes? What about the water softner pillows designed for Filstar canisters?
The other idea is not a good one if you ever do water changes.