DIY: Make your own Soda Ash cheaply | Melev's Reef
Once cooled, transfer the soda ash into a storage container, like this disposable Ziploc one. How to use it: If you want to mix up a gallon of alkalinity liquid solution for daily dosing, combine 1 gallon of RODI water with 2 cups of soda ash. Stir it very well for 30 seconds, then give it a few minutes to mix.