“Excellent pocket checker, easy to use they even have video instructions if you get stuck! This one is a bit more fiddly than the others but it does the trick...theres also instructions on how to increase the range shiuld you need it”
“A little tricky to use first time but once you have the hang of it, it's OK. My first reading was 0.37 which was great in helping me stabilise it. The cheaper ways where you check the colour against a chart were reading 0. I have this and the phosphate reader and am aiming to get the full set. I would highly recommend these testers for any serious fish and coral keepers.”
