May 24, 2009 #1 M Mark Active member May 13, 2008 1,361 0 36 what has caused this? The pump filter and UV are big enough to manage the pond. The only thing i can think of is that they have disturbed the settled algae. The fish that were in the pond before the Koi went in were only small goldfish.
what has caused this? The pump filter and UV are big enough to manage the pond. The only thing i can think of is that they have disturbed the settled algae. The fish that were in the pond before the Koi went in were only small goldfish.