Quote:
Originally Posted by Delphinus
Short answer: You can and you can't .. 
Slightly longer answer: Generally speaking, you can't, you just won't get adequate foam fractionation (for the reasons stated above). However that said, there does seem to be such thing as a FW skimmer, think they are run on ponds in areas where the water is so insanely hard that basically you can get foam production. |
All a pond skimmer does is clean up the surface of leaves and other debris before they sink to the bottom and decay. No foam or skimmate are produced.