Falling Leaves, Feeding Koi, and Other Pond Tips

“If you want to greatly diminish spring pond maintenance,” says Bill Renter, Deck and Patio’s Outdoor Living Expert, “now is the time to take a few steps to prevent too much debris from accumulating before winter sets in.”
Falling Leaves
Leaves are beautiful when they change, and pretty as they move down a stream, but, if they end up in your pond, they can turn into undesirable debris.


To get some tips on how to protect our ponds, pond expert Dave Kelly at Aquascapes Inc. (St. Charles, IL) offers advice:


“The best idea is to put up pond netting before the leaves fall,” he says. “But if you didn’t do that in time, you can use a long-handle pond net to scoop down to the bottom and pull out leaves and other debris.”
Ideally, put your net in place before leaves begin falling. Then, simply pull it out when they’ve all dropped. You can tent the net so it doesn’t sag into the pond when it gets weighted with leaves, say experts at Aquascape Inc. (Photo/Pond Net: Aquascape Inc)


Kelly also suggests trimming back and removing dead foliage from aquatic plants to help remove excessive organic material that would otherwise decompose in the water feature.
Pond Lilies
Pond lilies are idyllic water plants. However, during early Fall, it’s a good idea to cut them back to just about the base of the plant; also trim back any marginal plants that might eventually droop over into the water.
Pond Debris
Since some debris will make it into your pond no matter how hard you work, Aquasacpe recommends adding a cold water bacteria treatment, which has concentrated strains of beneficial bacteria that works well below 50 degrees (F). Dave Kelly recommends adding it routinely to help maintain water clarity and quality. Photo: Aquascape Inc.


Caring for Pond Fish in Fall


You can — and should — plump up your darlings to survive winter hibernation, by gradually increasing how much you feed them as temperatures start to drop. When pond water gets below 59 degrees, use fish food made for cold water. As the temperature continues to drop, gradually reduce the amount you feed them.


Once temperatures go below 55 degrees, says Dave Kelly, the metabolisms of pond fish slow way down. And when pond water gets down to 50 degrees, do not feed the fish any more. Their systems shut down in the colder water, and food sits inside them and rots. They get very sick and diseased from this.
Pond Fish in Fall
There is nothing cuter than your koi coming to you for more food. However, once the water gets to 50 degrees, experts say stop feeding them entirely.
Healthy Ponds
Once Spring arrives, and your pond and fish are healthy and thriving, you’ll be glad you took such good care of your pond in the Fall.
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  • Wonderful! In a couple of weeks, we'll be writing about how to tend your koi in winter -- during long bouts of extremely cold weather! Hope you'll check in with us then, too.
  • Mary Tonningsen Mary Tonningsen on Nov 06, 2014
    @Deck and Patio Company "Outdoor Living Experts", I don't have Koi, but do have 4 very large (like 8" or so inches long and fat!) gold fish. Should I care for them the same as one would care for Koi? The oldest one I've had for about 8 or 9 years now, from the time it was a little 13 cents, 1" long baby. I pretty much ignored it and until recently even forgot to feed it most of the time. It, and it's buddies, are now regularly fed and all are thriving. They seem pretty sturdy and I'm not sure how different they are from Koi. Should I follow your instructions for Koi care in a couple of weeks, or just go ahead and ignore them all winter and keep my fingers crossed like I usually do?
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