Pond Boss Magazine
Newest Members
deewayne2003, John Rolfe, B-rad, Cheryll, Steve Smewing
15415 Registered Users
Forum Stats
15416 Members
36 Forums
35566 Topics
484954 Posts

Max Online: 1039 @ 03/28/13 02:44 PM
Top Posters
esshup 24027
Cecil Baird1 20043
ewest 19348
Dave Davidson1 13377
Bill Cody 12367
Who's Online
15 registered (airborne3118, John Fitzgerald, Bobbss, anthropic, snrub, tommyt, Redonthehead, highflyer, Zep, hawkeyes, Shorty, teehjaeh57, RGC3, Pat Williamson, Mike Whatley), 215 Guests and 458 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
#33898 - 06/09/02 11:08 AM Karmex
Bill Morris Offline

Registered: 04/27/02
Posts: 103
Loc: North Zulch, Texas
Can anyone tell me the effects of a herbicide called Karmex on widgeon grass and water primrose?

#33899 - 06/09/02 01:19 PM Re: Karmex
Editor, Mark McDonald Offline

Registered: 04/14/02
Posts: 128
Loc: Boerne, TX
Karmex is not labeled for use on aquatic vegetation. Old-timers tell all sorts of horror tales about the misuse of Karmex and grim results that followed . . . dead trees, fish-kills, the works.

Mark McDonald
Editor, Pond Boss

#33900 - 06/12/02 09:17 AM Re: Karmex
Kelly Duffie Offline

Registered: 04/19/02
Posts: 1475
Loc: Cypress, TX (Helena A-E LLC))
Bill - I'd really like to know WHO is promoting the use of Karmex for aquatic treatments!!! Besides misleading good folks like yourself, that person is also violating Federal law as well as providing another point of attack for the anti-pesticide factions (via product misuse). Take a guess at the biggest reason why Dursban is no longer available to the retail market....
Do yourself a big favor and direct your questions (and business) to a chemical dealer who isn't proposing that you use Karmex in your pond.
BTW: I sell Karmex (diuron), but will absolutely refuse to sell it to anyone who indicates that their intended use of the product is related to pond treatments.

#33901 - 06/12/02 10:10 AM Re: Karmex
Fishman Offline

Registered: 05/08/02
Posts: 188
Loc: Waco, TX
Most of the people that contact me with pond problems AFTER using Karmex tell me they got it at their local farm and ranch center, coop, etc. My experience with employees at Coops is that they are very knowledgeable about ag related stuff, but know very little or nothing about aquatic vegetation management. I would certainly advise anyone planning to treat vegetation in their lake to ask somebody who specializes in aquatic vegetation. Kudo's to Mr. Duffy for his input on this board.

#33902 - 06/13/02 07:30 AM Re: Karmex
Bill Morris Offline

Registered: 04/27/02
Posts: 103
Loc: North Zulch, Texas
Kelly, this was a product name given to Marshell Williams by a feed center. He was at my place last weekend and I told him he had better get advise on the use of this product before doing anything. I posed the question for him and by now he has probably seen the response. Everything is well in my pond with the exception of declining water level. RAIN!!!!!!!!!!

#33903 - 06/13/02 11:29 PM Re: Karmex
Kelly Duffie Offline

Registered: 04/19/02
Posts: 1475
Loc: Cypress, TX (Helena A-E LLC))
Hope Marshell doesn't mind, but here's an email exchange from today to wrap up this thread.
Marshell here.... I am the one inquiring about karmex..... I just bought this property and it has two ponds.... And old farmer came by and mentioned karmex... then I went to *-* Feed in Magnolia, Texas and the owner said "oh, sure,,,that is the only reason we sell karmex, is for killing moss in ponds,,,good stuff"
I appreciate the input, and I will not use this stuff at all.
Tell me what I can use to cut back on this stuff
Thanks for the info. It is a shame that people who profess to have respect for and "knowledge" of pesticides, their environmental-impact and the law think themselves smugly-wise to recommend such treatments. They have no idea what they're doing - especially to their customer's pond and its future fish-productivity.
Unfortunately, KARMEX continues to be illegally and inappropriately utilized for aquatic treatments because it DOES kill algae; all kinds - including ALL planktonic algae (the base of the pond's foodchain), as well as nearby trees, grasses and virtually any other plant or algal specie. It also collects in fish-tissue and has reportedly caused F1 genetic mutations in some fish offspring.
Dr. Jim Davis (former Fisheries Specialist at A&M) frequently commented that more fish have been accidently killed by Karmex (diuron) than any other pesticide on the market - typically due to massive oxygen crashes that occur after the
product is applied to an algae-infested pond (caused by the decomposing algae).
I wished a had an simple, easy, cheap, safe and legal answer for dealing with algae in ponds. But, unfortunately, it doesn't really exist. Basically, the only answer lies in a management program that begins early in the spring - long
before filamentous algae makes its presence offensively known.
In a nutshell, make every effort to maintain a plankton bloom (which serves to reduce sunlight penetration, while also benefiting your pond's
food chain). This simple act will greatly help to reduce the severity of future filamentous algae problems. Second, treat shoreline patches and growths of filamentous algae - if necessary - with HYDROTHOL 191 (endothol) or a chelated copper product (such as CUTRINE PLUS, CAPTAIN, etc.). Such treatments will likely be needed every few weeks along the shoreline. But, if done correctly and in a timely manner, the expense isn't too great - and your fish population should not suffer any negative consequences.
Hope this helps.
Kelly Duffie

#33904 - 06/16/02 03:47 PM Re: Karmex
Kelly Duffie Offline

Registered: 04/19/02
Posts: 1475
Loc: Cypress, TX (Helena A-E LLC))
News Flash: Just received a call from a fellow (who isn't a PB reader) wondering why his fish were all dying shortly after a KARMEX treatment.
After explaining the cause, I suggested that he have a formal visit with the person who recommended the treatment - since that person (a feed store) may now bear partial responsibility for the cost of restocking the pond (since the recommendation violated the product's label).
Bear in mind, the product ISN'T at fault. Rather, it was the improper (and illegal) manner in which it was recommended & used that caused the problem.


Today's Birthdays
benji havens
Recent Posts
New Pond Construction In Jefferson Co, Mo.
by Bobbss
19 minutes 25 seconds ago
Female only LMB concept debunked?
by anthropic
30 minutes 3 seconds ago
Hungry Red Ear
by Shorty
Today at 10:12 PM
Bird leg fish transport
by Dave Davidson1
Today at 08:57 PM
JHAP's tips for new forum members..
by CMM
Today at 08:00 PM
Newbie to this Forum
by Bill Cody
Today at 07:53 PM
Never been much for fishing, but maybe someday....
by snrub
Today at 07:46 PM
Good Source/Right herbicide
by CMM
Today at 07:10 PM
by Centrarchid
Today at 06:50 PM
Cloverleaf won't catch BHC
by Mike Whatley
Today at 04:38 PM
Newly Uploaded Images
Help ID this fish
Crayfish monster.
Turkey Pics
Question on pond draining
King Fisher
Tree Swallow grooming---Female Red-wing black bird

2014 POND BOSS INC. all rights reserved USA and Worldwide