Why??? IMO: mean people suck! (updated)

[Chan790]

51. Water-exchange?

If you don't have chlorinated city water, you can try water exchange method. You add fresh water at one end of the pond at a slightly-higher rate of flow (adding from the bottom) than you pump water from the surface on the other end. It won't remove the soap but it will progressively dilute it.

I got this advice from my neighbors. They have a small protected wetland & 300ft² pond (with a full ecosystem including fish) on their property and neighbors who constantly attempt to pollute it because the wetland is subject to US Army Corps of Engineers and CT Dept. of Energy and Environmental Protection conservation which means no permits within 400 yards: no new construction, no additions, no pool installs, nothing that might alter the water. Their neighbors hate it so they try to destroy the pond so that it will be removed from conservation...last summer it was motor oil. The only way to get the motor oil out was skimming and Palmolive. The only way to get the Palmolive out was WX dilution as described above. As you noted, you want to dump as much rain water or pond water as you can find (on an ongoing basis) in as well to maintain ecological balance and algae/microbial presence.

If you contact local parks dept. or conservationists, you can probably get assistance on sourcing green water...also, if there is any water table exposure, this becomes a not-minor criminal issue (if you called the police, it's already a criminal issue)...if we could prove which neighbor (I know which neighbor...I cannot prove which neighbor.) dumped the oil, they'd be looking at 3-5 years of prison, more if the local State's Atty. wanted to pursue it as a terrorist act...because it could have polluted wells, it would be treated as attempting to poison the muni. water supply.