Well I just tried it. It's pretty potent. I had a dKh
of 6 and wanted to make it 9. I followed the "instructions" and added one heaping tsp per 25 gallons for 1 dKh
point. I added a total of 8 to be on the safe side. It raised my dKh
to 12 as measured an hour after the addition. I didn't check pH. Lots of info on this thread at reef central http://reefcentral.com/forums/showth...=baking%2Bsoda
I made about 12 oz of buffer for less than 50 cents. Fits my method of reef keeping perfectly (DIY & cheap).