After switching from the API test kit to a Hanna checker, I've seen that the alk
dropped from 8-9 (API) to about 6.9 (Hanna). I do weekly PWCs, and calcium is at 492 when I tested last week (Hanna checker). pH is approx 8.1-8.2.
Since this is a nano tank, what's the safest way to increase the alkalinity without crashing pH or precipitating calcium? I was thinking of baking some baking soda in the oven (400 degrees for an hour or so), and add a pinch to some tank water, then into a high flow area. I'm hoping not to have to do a regular dosing regime, since it is a smaller tank, but if needed, I can add some to the ATO reservoir.