Favorite Alk Test???

[mattdean]

Hanna Alk Checker. Doesn't get easier to read. And pretty darn accurate.

[amoreira]

For a quickie, I use (gasp!) the aquarium pharmaceuticals test. It's a simple titration with a dropper bottle. It's accurate to +/- 1 dKh and that's all I need to tell me if my alk is stable.

I like the Hanna tester for low range phosphate measurement. None of those standard test kits give me anything close to the accuracy of this one and are useless in telling me if I'm above critical levels that would cause me problems for my sensitive corals.