Did 25% last night. Doing 25% today.
Nitrates are down to about 40. Water is still cloudy.
Also can't keep the PH up. Dropped to 7.75 last night. Normally sits at 8.2. Using lots of Seachem 8.3 buffer which is also supposed to raise alkinity.
Also noticed the bulb on my UV sterilizer went out. Wonder if that did anything.
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