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FAQs on Organophosphate Insecticide Use in Aquariums

Related Articles: Pond Parasite Disease Control with DTHP by Bob Fenner, Use of Biological Cleaners, Aquatic Surgery, The Three Sets of Factors That Determine Livestock Health/Disease

Related FAQs: & Pond Use of DTHP, Medications/Treatments 1, Medications/Treatments 2, Medications/Treatments 3Antibiotics/Antimicrobials, Anthelmintics/Vermifuges/Dewormers, Copper FAQs 1, Epsom/Other Salts, Formalin/Formaldehyde, Furan Compounds, Garlic, Homeopathic Remedies (teas, pepper sauce, other shams...), Malachite Green, Mercury Compounds/Topicals, Methylene Blue, Metronidazole, Quinine Compounds, Sulfas, Treating Disease, Treatment Tanks, Medications/Treatments II, Treating Parasitic Disease, Using Hyposalinity to Treat Parasitic Disease, Garlic UseAntibiotic Use Marine Disease 1, Puffer Disease

Organophosphates should NOT be used in the presence of Arthropods (crustaceans e.g.) or with Cartilaginous fishes (sharks, rays)... Others are okay.

Re: No clowning around (like I'm sure I'm the first to come up with that), Dimilin in dips  -- 04/1/08 I had looked at that link (many times), couldn't make any inferences. Unfortunately the clown died the day before yesterday. He had no tail left, think he suffered too long and was beyond return. <Agreed> Just before he died I dosed the QT with Jungle Parasite clear (Praziquantel, Dimilin, Metronidazole, Acriflavine). I really wanted just Metronidazole but I couldn't get any at the time and picked up the mentioned out of desperation. Which leads me to my question. In the dip/baths section, Bob is completely against using Dimilin in marine systems. <Mmm, not efficacious as a dip ingredient> Why is this so (especially if there are no inverts ie.. QT. I figure its just as bad as Cu++ meds, formalin...etc.)? <... bad? No... just that acetylcholinesterase inhibitors in low concentration don't do any good in short exposure> I could have sworn I also saw a post with Bob recommending it for marine (although I can't find it anymore). Could you explain the contradiction (that is if there was, did his opinion change over time?). <Not w/o ref. to where this is stated, no> Lastly, I assumed I had a parasitic infection as upon dosing the QT, the clown moved erratically. Presumably because the parasites were affected. <... what parasites? Do you have microscopic evidence?> It could have been just from the clown reacting to the meds but something (which I can't articulate...you had to see the clown) seemed the parasites were moving to get away and burrowing in him further. Thanks <... BobF>

Re: No clowning around (like I'm sure I'm the first to come up with that) -- 04/02/08 I do not have microscopic evidence. It was just an inference on an observation with out proof - merely a feeling (true, not scientific at all). <I see... do know this sort of guessing is not altogether accurate. There are symptoms that "mimic" pathological disease... with non-infectious/parasitic etiologies... Too often "marks", abrasions, "odd" behavior are rooted in social, environmental, nutritional, genetic... causes> I just like to know if you would recommend/use Dimilin in marine QT (not dip but in the QT) and under what circumstance? If not, why? Thanks <I have used, and suggested such use for arthropod zoonoses... on bony fishes (not cartilaginous). IF one was sure of a copepod infestation let's say, Dimilin might be a good choice. BobF>

Can Dylox 80 be used to treat velvet, brook as well as flukes, etc? No    12/31/07 Hello Mr. Fenner, <Kathy> I came across your address during a search online about Dylox 80. I had a Laboutei I was treating (hypo) for what I thought was ich. It was in a 75 gallon QT by itself, then about 2 1/2 weeks into hypo, something was off. Feeding was not as robust, and when she was resting, I noticed the scales sticking out like pinecones since I was able to view from above. I performed a formalin bath (45 min.) followed by a freshwater formalin dip (13 minutes). Nothing came off in the bath, as soon as I dipped in freshwater, some large, flat, transparent shapes came off. I tried to look closely at them, they were transparent and paper thin and long (about 1" each). I saw one that looked like it had tan 'squiggles' in it's body, resembling ramen noodles. Another large piece, about 1 1/2" in length was light colored and looked like a stiff string of pearls scaled down. <Likely Trematodes> I then performed a 20% water change to bring up the salinity a little bit. I dosed De-Los from National Fish Pharmaceuticals instead of copper, thinking copper is more harsh. In the morning, the laboutei was labored, and she was sitting at the bottom of the tank instead of active. I noticed a dusting of dots all over her as well. So, would the Dylox 80 be effective with the flukes(?) assuming that's what they are as well as velvet? <Won't treat either very well, definitely NOT Protozoans... w/o killing the hosts concomitantly> I'm wondering now if it's velvet because ich should have fallen off by now, correct? <... Not necessarily. IF Amyloodinium is/was present, it could be so embedded that the Formalin exposure did not remove it all> Thank you very much in advance for any advice you may offer. Best regards, Kathy Chu <My comments, input re identifying, treating these complaints is archived on WWM. I encourage your reading there soon. I would treat simultaneously with both a vermifuge and a protozoacide... Bob Fenner>

Re: Can Dylox 80 be used to treat velvet , brook as well as flukes, etc?   12/31/07 Hello Mr. Fenner, Thank you for your response. I will have a look at the articles you mentioned in your mail. Much appreciated and all the best in the new year. -Kathy <And for you and yours, peace and prosperity. Please do read what little we have on this acetylcholinesterase inhibitor... I have written, presented widely on the use of this and other organophosphate use in "pond fish" and commercial aquaculture applications... But it is a not uncommon arthrocide in marine and freshwater "remedies"... Do look on the Net, elsewhere with the use of other labels: DTHP, Neguvon, Masoten... Bob Fenner> How long can I use Clout? Hi, I am currently treating my African Cichlids for parasites with Clout. I was wondering how long I can/should use this medication for to eradicate the problem but at the same time not to harm the fish. <A maximum of two weeks. Bob Fenner> Thanks

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