My dad has a 6 thousand gallon outdoor pond and we're looking at the possibility of getting some algae eaters. Here's a topic about it:
http://www.aquariumadvice.com/viewtopic.php?p=781411
The pond has plenty of brown algae on the bottom, rocks, everything is slimy with the stuff, to the point that the water is brown and you can't see the bottom. We're looking at also treating the water for it but we'd like to introduce some algae eaters. The pond isn't really overtaken by the stuff, it seems to stay in ballance but we'd like a tad bit clearer water.
But there's a catch. We have 5-year old koi in there that spend the winter in the pond. Is there an algae eater that can survive year-round in there? We simply don't have the means to keep them indoors, not to mention trying to catch them
I'm told the absolute minimum water temperature in the harshest winter is 38-39*F. The bottom never freezes, that's where the koi hibernate.
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