Join Date: Dec 2002
Location: Some where in SOCAL
Yea your KH is too low. Try getting it around 5ppm's and this will give you a more stable pH. I have mine set a 5ppm's and add CO2 on a 24/7 basis. IOW don't turn it off at night. The pH swing will only be marginal and will not give any problems. Well it should not give any problems. It really depends on your own specific water conditions.
BTW I do use only RO water and add my micro/macro and all the other stuff every time I make a 25 % water change which is weekly.
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