"John McGaw" wrote in message
...

I cannot say for "regular" plants but for aquarium plants increasing the
dissolved CO2 definitely boosts growth. You can purchase automatic dosing
systems from several makers that handle the job. Of course with an
aquarium one must balance out the needs of the fish and the plants pretty
carefully to keep from killing one or the other (although I've managed to
do both on occasion).


CO2 systems for aquariums are a different game. They provide a steady stream
of CO2 from a yeast pile or a compressed air tank. Watering with carbonated
water isn't likely to have the same effect.

-S