Put in a small pump and program it like a dosing pump. [If you have an Apex or similar].
I have a 20 gal set up for this. Kalk creates a film on top that keeps CO2 out, and the PH up on the solution. The pump goes on for 5 min every 3 hours.
I'm always weary when someone hooks up the RODI unit to the ATO float switch.
Daniel. :spin3:
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