First post here. While I'm new to reefing I still believe that there are some things that I can point out. The first thing that I've noticed was that there are many companies selling Sodium Bicarbonate (NaHCO3) . I hadn't taken chemistry in a few years but when I did, I took advanced chemistry of the 100 and 200 levels. I remember having to buy Sodium BiCarbonate for one of my projects. Boy was I delighted when I discovered it was nothing more than baking soda that you can buy for $3.00 for 5lbs. I'm no stranger to spending money on my tank and maybe even overpaying here and there, but when I see baking soda being sold for $20/lb I figured I'd share the news. Im sure this is known already but why not spread the news again. Buy baking soda for 89 cents at the grocery store if you need to increase your alkalinity or PH. Happy reefing.