Well, our tap water is over 9pH. Just for grins i put the air stones in a gallon of tap water and decided to check pH the next day. It had dropped more than 2 whole points to 7.2pH. Now i keep all my tap water for plants aerated. If nothing else its removing the chlorine and supplying at least a little oxygen to the roots.
The odd part is that its more common for air stones to raise pH in aquariums. So the air being pumped in must be removing something. This is in the basement and CO2 is heavier than oxygen but i find it unlikely im adding enough CO2 to make any noticeable amounts of carbonic acid. At least not enough to effect pH.
The odd part is that its more common for air stones to raise pH in aquariums. So the air being pumped in must be removing something. This is in the basement and CO2 is heavier than oxygen but i find it unlikely im adding enough CO2 to make any noticeable amounts of carbonic acid. At least not enough to effect pH.