I have a 125gal reef tank that always seams to be a bit short on alkalinity.. whats the best way to raise it with supplements?
>> Hmm, this is a deceptively difficult question… Let’s see… it really depends on how you’re raising your biomineral content and pH… and the use of other materials in your system… A most-likely scenario: If you’re using Kalkwasser… dripping it in slowly, at night… and not depleting (therefore) the carbon dioxide in your system… You can easily boost alkalinity by the simple addition of baking soda/sodium bicarbonate… If you’re putting the Kalk in too much, too fast, and there is insufficient carbon dioxide to neutralize the hydroxide (the OH- of the Ca(OH)2) of the Kalk… you are going to be precipitating out your calcium, magnesium, strontium… with the addition of “alkaline buffering” materials….
