titanium
- 95
- 33
I don't want to spend a lot. Can anyone suggest a quality pen that works for a decent price online? Thanks.
The oakton I had was all over amazon and eBay. Probably still is. Although I prefer GH drops for pH over a meter all day.
You can get a combo PH/PPM meter. They cost a little bit more but worth it in the long run.Should I buy a ppm meter?