nitrates seem normal you got to remember most city water has 10-15 ppm of nitrates in it mine stay between 20 and 40. The mark on the side just looks like a scratch to me
I respectfully disagree - I don't think that nitrates should be 40ppm only 3 days after an 80% WC. Unless tap water has higher nitrates...
Same. Thankfully, you guys are great friends. I’m thinking :” I can’t read this and it’s in my hand!”OK, guess I was reading it wrong at 40. Apologies.
It's hard enough to read my own sometimes let alone someone else's on a computer.![]()