"Bonnie" wrote in message
...
wrote:
those gases are light and quickly dissipate if the water is going over a
waterfall
with lots of rocks. I doubt it would be toxic at that point. but it
does smell bad
while in the veggie filter. I just dont know why anybody would make it
deep when
shallow does great. Ingrid

Mine is deeper because I wanted it to drain into my raised
pond.
I guess I could have just filled in the bottom with dirt but
I was running out of dirt ;-).

Oh sure, I am not saying it's bad...just that for filtration it's not
neccessary. Biomechanical filters need volume, VF's need surface area.

BV.