[Myka]

I agree with Wicked Frags, don't try to adjust it directly by altering alkalinity or using pH buffers. Another thing to consider is that having CO2 in the house will lower the pH of the tank. Same with not having a protein skimmer. Excess nutrients will also cause the pH to drop. Something as simple as adding an air pump in the sump will often do the trick if you don't have a skimmer. Your SeaClone is probably doing the trick by adding bubbles, although I question how effective it is at removing nutrients.

You can also take a peek for some more info on pH in the article I wrote (link in sig).