API 500 Pond Master Test Kit for Pond Water

Good product easy to use

works well

Good product

Find that the phials stain in time, so bought new.

Update: Apologies. Took water to local fish trader. The readings were about right Never before have in nearly 30 years keeping fish have I experienced such massive pond water parameter changes in a short period of time and wrongly accused the kit of being faulty. Lesson learnt. Apologies for review below - I was wrong. ———————————- Bought a couple of these over the years, this one must be faulty. Ph and phosphate tests, you can use the same water and time with 2 tests -and you get different results. Have repeated this multiple times and in 80% of tests the results don’t match. Nitrate and ammonia are fine. This is the first set I’ve bought that’s didn’t have gas tubes but plastic. Maybe that’s the issue. Don’t trust these now so won’t be buying again