Can you put Chinese Algae Eaters in a koi pond to keep it sanatary???? OR will the koi eat them???
I don’t think that would be such a good idea, even if it’s a heated pond. If the CAE is large enough to be doing much good at cleaning algae for an area the size of a pond, it’s to large to be really interested in algae and also large enough to be adding significantly to the waste.
ibewhoever@yahoo.com | Jun 17, 2007
i would think no, but snails are a better bet in my opinion, as are some shrimp.
PyRo | Jun 17, 2007
The koi will not eat the algae eaters. Koi, as a general rule, do not eat other fish, as long as they are big enough to be recognized as a fish (i.e., at least an inch or so long).
I have used plecostamus as an algae eater in an outdoor pond before, but recognize that it will die as soon as temperatures get below 55-60 degrees. Also, you need a lot of room – if the fish can’t get away from it, and it doesn’t have enough algae to eat, it will nip the fins of the koi! And, their waste does add to the filter load of the pond, in general – they add a lot of ammonia for not being much to look at. Their algae-clearing ability was OK – nothing to rave about, but decent, I guess.
However, larger koi can and do like to eat snails, so I am not certain that snails will solve your algae problem, either. Tried that for algae control, too – they did a decent job, but only lived in the waterfalls because the koi picked the pond clean of them.
Significant algae growth is a sign of a lot of nutrients in the water – it is possible you either a) are feeding your koi too much, or b) don’t have enough plants in your pond that will absorb some of that ammonia through their roots. As a general rule, you should have plant material equal to about 2/3 of the surface of your pond (a combination of submerged oxygen generators, ornamentals such as lily and iris, and floaters such as water hyacinth and water lettuce, etc.). If you don’t like the plants in your pond itself, build a "veggie filter" about 1/3 the size of your pond and stock it full of heavy feeders like species iris (the yellow water iris) – circulate your pond water through the veggie filter before cycling it back into your pond. This is by far the most effective method of controlling algae that we have tried so far – our fish have never looked better.
Hope this helps – good luck!
Poopy | Jun 18, 2007