Join Date: Apr 2014
Location: NW Suburbs of Chicago
Making the switch to RODI
I'm almost finished setting up my new RO/DI system. In addition to using this water on a new tank I'm assembling, I'd like to convert my existing tanks to the new water.
I currently have two 20 gallon aquariums. The pH is 8.4 with a TDS ~700. I haven't quite nailed down the aged water chemistry yet, but I'm aiming for a pH around 6.5 - 7, GH 6 and KH 3.
I do weekly 50% PWCs on these tank. My uneducated plan is to just replace 1-2 gallons of tap water with the new remineralized water during the PWC and to just keep an eye on the pH until I get close enough to switch over completely. I say "uneducated plan" because I'm not basing it on anything... it just seems right in my head. I'm posting this thread in hopes of getting an educated opinion. Am I on the right track? I just pulled the 1-2 gallons number out of thin air. Is there a way of finding out the right/safe volume to mix in every week? It's been a while since high school chemistry class for me.