Seachem MultiTest High pH & Alkalinity

I was worried my marine tank's pH was creeping too high, but this test kit gave me precise readings down to 8.6, which is perfect for checking limewater dosing. The alkalinity range of 2–3 meq/L matches natural sea water exactly, so I feel confident my corals are stable.

Finally, a test that clearly shows whether my reef tank is holding that 8.4 pH target—the drop-count method makes it easy to read without squinting at a card. My alkalinity readings have been stable at 3 meq/L, which gives me confidence in my dosing routine.

I’ve been using this kit for a few weeks now and I’m happy with how clear the color chart is for reading pH levels. The alkalinity test is straightforward and gives me results quickly. Took a little getting used to the instructions, but it’s worth it for the accuracy.