Originally posted by booya
The algae is going away a little and the pH has went down some. I was thinking that if I got the pH to were it needs to be that the algae would go way quicker. the pH was at 8 all the time and now it stays in the high 7's and will get to 8 every now and then.
I am not an expert here but I think you got it backwards. Kip did a nice thread on ph bout a month or two ago. Also other sources report that plant life buffers ph. From kip's thread it seems the carbon dioxide leads to ph drop. As you already know, plant life consumes carbon dioxide. So as you (and I) have observed as plant life decreased ph went down. Of course that is overstated and buffering in the system comes into play also. But it is what we have observed.
Perhaps the best thing to do is get the plant life where you want it and then worry about the ph (within reason). Again adding macros or marine plants would consume the carbon dioxide, plant nutrients and therefore control the hair algae and buffer the ph.
In my system I did add a pinch of baking soda and it did seem to help. But the real solution was more maturing of the system and the addition of plant life.