- Joined
- Aug 8, 2017
- Messages
- 117
- Reaction score
- 33
On august 28 my nitrates tested at 40 ppm and today it tested at 5 ppm, I didn't do a water change yet and I noticed brownie sh resist algae forming on rocks that's what prompted me to test. I'm puzzled as to how did the nitrates drop so much and I have no protein skimmer

