I've been using Seachem Neutral Regulator for years now, it seems to do the job, and is a good product. My issue is that I do a LOT of water changes and am continually pouring the Neutral Regulator into the tanks (15 of them). I can't help thinking I could buy a couple buckets of the appropriate chemicals to provide a neutral pH buffer in my tanks at a fraction of the cost, but I can't seem to figure out what appropriate chemicals. Any help would be appreciated! thanks in advance. Brent