My TA is a bit high and the Pool Calculator is telling me to add MA to lower the pH to 7.0 - 7.2 and then aerate to bring up the pH. I don't have any water features to aerate with, but I do have a small 1/4 hp, 23 gpm submersible pump from Harbor Freight. If I put the pump on a step just under the surface (to minimize pumping losses) and put a fan spray head on the end of the hose with it angled up into the air and falling into the pool, would that be a very effective aerator?
Actually, I just put the pump on the first step and turned it on with no hose connected and it shoots a column of water about 3-4 feet in the air before splashing back down into the pool. Would this be good enough? I'm trying to get the TA from about 110 down to 80-90. Any rough idea how long I might have to leave it running - hours? days?