“Very useful piece of kit for keeping track of your tank values”
“If you have the Hanna HI-772, you'll need these.... Charterhouse always have the best price around !”
“A must for any reef keeper cheapest online too”
“Very reliable and accurate”
“Makes life easier love it”
“An extremely good product at an affordable price”
“Reagent for one of the essential elements to check each week using the Hanna Alkalinity Checker”
