Posted: 14/07/2015 at 18:28
I would not use a hose and tap water. Chlorine in water is a gas (most of the time depending on water company) and takes about 24hrs to evaporate unless agitated. I would just use a bucket of water from the pond and keep pouring it in.
As others have suggested a aerator and oxygenating plants are the best thing especially if there are fish in it. I am sure you can get solar/wind powered aerator. I made my own for brewing worm tea.