“We let the water circulate for a week, then we slowly add in the koi,” he says. They typically come in transparent bags and ...

or aerator to your pond creates movement, discouraging mosquitoes from laying eggs (mosquitoes lay eggs in stagnant water).

Xie, corresponding author of the study. The efficient multi-stage treatment system integrates a sedimentation pond, a first filtration dam, an aeration pond, a second filtration dam, a biological ...