Alkalinity

[ReeferTang44]

Quick question so far, I’ve been keeping my reef tank at 9.7 alkalinity and I’ve been testing daily, and it goes down about .1 a day. How do I maintain it properly without going overboard?

 

[exnisstech]

This calculator will calculate the amount of additive needed for a 0.1 drop per day

EDIT: It more than likely a small enough amount you could dose manually. I dose 3 tanks manually with no issues except I can't leave home for more than 24 hours :winking-face:

 

[mjgonereefing]

Bite the bullet and get a doser

 

[homer1475]

No test kit on the market can detect a 0.1DKH drop and be accurate. Even the hanna meter(touted as the best for alk testing) has a .3DKH degree of error.

I would do nothing at this point. Maybe test in a couple days, and hand dose according to a reef calculator using plain old arm and hammer baking soda(AKA @Randy Holmes-Farley DIY 2 part).

https://reefkeeping.com/issues/2006-02/rhf/index.php - DIY 2 part

http://reef.diesyst.com/chemcalc/chemcalc.html - Reef calculator