Power heads

Hi Gail Bowker,

Powerheads are elecric motors encapsulated in Epoxy resins
designed to be run submerged.  They are great.  In the case of
plants, they provide needed circulation, which I believe helps
circulate nutrients, while (again my theory) keeping hair algae
from sticking and getting a strong start.  Start with a small
pump rathey than a larger one.