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Country Discussion Topics
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Grass Carp (White Amur)
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Doc    Posted 07-10-2001 at 15:14:40       [Reply]  [No Email]
Has anyone tried using grass carp (White Amur) fish to control weeds in a pond/lake? Besides the beaver (several now) returning to the pond and trying to take over, weeds have come up in abundance. The area is aprox. 1 1/2 acre. I bought 12 carp ($4 each) that were 8 - 12 inches long. Since I put them in 4 weeks ago it was good by Sam! Haven't seen hide nor hair of them. The lake ph is 7.8. The temp. is getting into the mid 90's each day so the water is warming up. I don't want to use chemicals to kill the weeds as cattle drink from the pond. Any and all solutions/suggestions would be appreciated. Hope everyone is having a good summer! Best Regards, Doc

jsy    Posted 07-31-2002 at 17:59:08       [Reply]  [Send Email]
Where did you find the grass carp fish?? Where can I find some??

bob    Posted 06-21-2002 at 08:47:59       [Reply]  [Send Email]
amur carp do not eat or otherwise control algae. they eat and therefore control weeds. be patient. if you put enough into a pond to eliminate weeds overnight, then whtat would they eat afterward?

Nathan(GA)    Posted 07-10-2001 at 20:14:28       [Reply]  [No Email]
I have one big one in our small pond (3/4 ac). I got it from a guy that was draining his pond a year or so ago. So far, I haven't seen any weeds. It used to get covered with weeds. Every once in a while I see it near the top, but mostly it stays out of site.

Wolf    Posted 07-10-2001 at 19:09:04       [Reply]  [No Email]
We put some in Dad and Mom's pond a number of years ago that were about that size. Durn fish crane got every one of them. One of my buddies has a huge one in his pond, and a minimal amount of algae. If the fish cranes don't get em, they'll get your algae.

Ole Cuss    Posted 07-10-2001 at 17:22:19       [Reply]  [No Email]

Check your state regulations before stocking with grass carp. In Maryland, they are illegal to sell or stock in a pond; otherwise. I would love to use them in my pond for algae control. In lieu of the fish, I get pretty good algae control by dumping a bale of straw into a knee-deep area of the pond in February each year before algae has a chance to start. I wrap the bale in chicken wire so it stays together when I go to haul it out in the fall (you don't have to haul it out but I like to keep the shallows cleaned up; it will be very sodden and heavy,naturally). Barley straw is said to be best for this purpose but I have used wheat straw and oat straw to good effect. For severe algae, you might want to remove the bale in mid-summer and put a fresh bale in, or use 2 bales to start with in late winter/early spring. This advice came from my extension agent years ago and it works pretty good. Nobody knows why, but it was discovered after someone had accidentally dumped straw into a pond, left it there, and noticed a retardation of algae growth.

Hogman    Posted 07-10-2001 at 19:46:12       [Reply]  [No Email]
I've never tried it but barley is supposed to do the best job of control. Some critter round here a while back as intended ta make a fortune raisin it ta sell ta tha city types with fish ponds. Not heard anything about it since, Mabe He found a better use as a liquid...

Sned.    Posted 07-10-2001 at 16:57:10       [Reply]  [No Email]
I know several people who have used the carp with good success. I think it takes quite a while to see results and there is a certain number of fish per acre of water to be most effective. Seems like I heard somewhere that Copper Sulfate won't harm livestock and is effective on weeds, not real sure of that though. If it's cat-tails then a track-hoe works great!

Dreamweaver    Posted 07-10-2001 at 16:40:35       [Reply]  [No Email]
Doc, I didn't know anything about um, but did some reading on the net. I think I could use some in my pond. Anyway, here is a pretty good link.

IHank    Posted 07-10-2001 at 18:36:24       [Reply]  [Send Email]
All- Dream Weaver reports an excellent source for wildlife info. Go ahead and snoop around the IDNR web site and you'll find all sorts of good to know stuff.

It was not mentioned and I'm wondering about water temperature, water depth to get cool temperature during our horrible summer heat, etc.

Like the site sez, they don't reproduce in farm ponds and gotta be re-stocked annually.

For $9 annual subcription one can get the "Iowa Conservationist" magazine and a beautiful calendar. Well worth the money! Yes, I'm biased... IHank in Iowa

Clint    Posted 07-20-2001 at 20:42:22       [Reply]  [No Email]
A lady I work with has a large pond and she noticed moss starting to grow around the edges. She talked to the people who built the pond and stocked it the had put grass carp in, the pond was built in 1964 she was told to put some liquid chemical in but she put to much in and killed some of her grass carp she said she pulled 20 or more out that weighed 25-30 pounds after they get so big they stop eating so much so that is why she was getting moss.

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