I have been waiting to put a co2 system into my OEBT tank as it lowers pH and my pH has been consitently creeping lower. While not uncommon in a tank of RO water with Indian Almond Leaf and Driftwood I did not want to take any risks so when I added the CO2 system I set it to very low and added just a little Sodium Bicarbonate to the filter. I plan to pay close attention to the  pH over the next week to play it safe.

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