More water chemistry questions
I have 2 tanks, a 30g and a 55g.
I recently began running pressurized CO2 on my 55g.
I run DIY on the 30g.
I dose both EI with GW ferts, with 50% water changes weekly.
I'm wondering about elevated Kh readings in my 55, which suggest way-high CO2.
Just took these readings this a.m.
55g kh: 8.5
30g kh: 7.0
tap kh (fresh): 6.0
I'll let a tap sample stand and retest tomorrow.
In the past, my tap and 55g kh were around 7-7.5.
My pressurized CO2 is running 24/7 around 80 bpm. This morning the Ph in my 55 was 6.4.
I had recently upped the CO2, trying to discourage some BBA, but didn't realize it had gotten this high. This a.m., before the lights went on, the kh and ph yield a CO2 ppm of 80-100.
This sounds REALLY high to me. But I don't see any fish gasping or other signs of stress.
Any thoughts? Should I decrease my CO2 bpm?
Why would the kh in my 55 be so much higher than the 30 or tap?