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Joined: Aug 2002
Posts: 20,043 Likes: 1
Hall of Fame  Lunker
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Hall of Fame Lunker
Joined: Aug 2002
Posts: 20,043 Likes: 1 |
Could it be because it's at least 10 years old? LOL
Using it to spot treat clumps of some type of pondweed species that is interfering with seining. Looks like bushy pondweed.
Applied a second application to see if it has any effect 2 weeks after the first one.
I seem to remember it can kill fish if overdone, and the fish are supposed to avoid treated areas, but that doesn't seem to be the case. Some of the bluegill fingerlings still hang around the clumps of weeds.
Last edited by Cecil Baird1; 10/12/15 08:27 PM.
If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.
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Joined: Apr 2002
Posts: 1,488 Likes: 2
Lunker
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Lunker
Joined: Apr 2002
Posts: 1,488 Likes: 2 |
If fish are hanging around immediately after a "herbicidal-rate" of Hydrothol 191 is applied, either:
1) the product has severely degraded with age (unlikely), or
2) your dosage (ppm concentration) is insufficient for weed control (very likely)
Effective spot-treatments with either form of endothall are tough to achieve due to diffusion from the target-area occurring too rapidly. The smaller the target-area, the higher the required ppm-concentration in order to maintain a "plant-lethal concentration" for the necessary amount of time - often 4+ hours.
I rarely recommend Aquathol or Hydrothol for "spot treatments" unless the site-parameters are perfect.
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Joined: Aug 2002
Posts: 20,043 Likes: 1
Hall of Fame Lunker
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Hall of Fame Lunker
Joined: Aug 2002
Posts: 20,043 Likes: 1 |
Thanks Kelly!
I had it laying around so thought I'd use it.
Last edited by Cecil Baird1; 10/12/15 08:48 PM.
If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.
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Joined: Aug 2002
Posts: 20,043 Likes: 1
Hall of Fame Lunker
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OP
Hall of Fame Lunker
Joined: Aug 2002
Posts: 20,043 Likes: 1 |
The Hydrothol 191 did end up doing the job.
If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.
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