4 ms·
One issue seems to be that if the pond is of any decent size (say > 20 meters in diameter) and you put in a few of these devices at the end of the day they are
by diasks2 12y ago
One issue seems to be that if the pond is of any decent size (say > 20 meters in diameter) and you put in a few of these devices at the end of the day they are all in the same corner of the pond due to the current/wind.