Thanks for the update. It’s good to hear that your seahorses tolerated the formalin bath well and are showing clear signs of improvement. It’s encouraging that the cottony stuff on the seahorse’s fin has cleared up and that the female with the cloudy eye has started eating on her own again.
Here is a copy of the post from John that explains how to post photos on this particular forum, Tammie:
Hi Christine ,
1st you have to host it somewhere like photobucket or in my case AOLmyspace
but you must make it small as the board will only take a small photo.
You click on the orange Img tag in the reply window and add your address of the hosted PIC etc.. Wherever.com ewseahorse.jpg
Make sure to hit the close all tags tab after you are finished and then preveiew your post to see if it worked that way you can keep trying till you get it right without posting.
An image resize tool is very helpful.
For a larger image you could add a link with URL tab to the hosted photo. In some cases it will not work for all people but will for others it will (I never understood that ) prob an AOL issue in my case!
In the meantime, the formalin can be administered as a series of baths if necessary to resolve a particular problem. But the formalin treatments are stressful for the fish, so it’s best to give them a break between the formalin dips. When formalin is concerned, 48 hours is the minimum amount of time I would consider between baths, and Kordon recommends spacing the treatments a full week apart. In your case, Tammie, I would say you can safely consider administering another formalin bath to the female with the cloudy eye after 48 hours have elapsed, providing you follow all of the usual precautions, as discussed below:
Formalin (HCHO) is basically a 37% solution of formaldehyde and water. It is a potent external fungicide, external protozoacide, and antiparasitic, and is thus an effective medication for eradicating external parasites, treating fungal lesions, and reducing the swelling from such infections. It is a wonder drug for treating cases of Popeye caused by trematodes, and also eradicates external nematodes.
In my experience, provided it is administered properly, seahorses tolerate treatment with formalin very well at therapeutic dosages. For a long term bath the correct dose is 15 to 25 mg/L. [Note: 25 mg/L equals 1 ml (cc) of 37% formalin per 10 gallons of water.] This is done every other day for 3 treatments.
For a short term bath (dip) the correct dose is 250 mg/L. This would equal 1 ml (cc) of 37% formalin per 1 gallon of water. This should be for about 45 minutes to 1 hour. In my opinion, formalin is a safe, effective treatment for parasitic infections in seahorses providing you don’t exceed these dosages and observe the following precautions for administering the medication properly:
Many commercial formalin products are readily available to hobbyists, such as Kordon’s Formalin 3, Formalin-F sold by Natchez Animal Supply, and Paracide-F, sold by Argent go to top Chemical Laboratories. Or whatever brand of formalin is available at your fish store should work fine.
A formalin bath simply involves immersing the seahorse in a container of saltwater which contains the proper dosage of formalin for a period of 30-60 minutes before transferring it to your hospital tank. Include a hitching post of some sort in the container and follow these instructions: place the fish in a three-gallon bucket or a similar clean, inert container containing precisely one gallon of siphoned, aerated tank water. Medicate the bucket of water with with the appropriate amount of formalin for a concentrated bath according to the directions on the label. Place an airstone in the bucket and leave the fish in the bath for 30 minutes. If at any time the fish becomes listless, exhausted or loses its balance, immediately place the fish in clean, untreated water in your hospital tank.
I want you to be aware of these precautions when administering the formalin bath:
Formalin has limited shelf life and degrades to the highly toxic substance paraformaldehyde (identified as a white precipitate on the bottom of the solution); avoid using any formalin product which has such a precipitate at the bottom of the bottle.
Formalin basically consumes oxygen so vigorous aeration must be provided during treatment.
Time the bath closely and never exceed one hour of chemical exposure at this concentration.
Observe the seahorse closely during the bath at all times, and it show signs of distress before the allotted time has elapsed, remove it from the treatment immediately.
If you can obtain Formalin 3 from Kordon at your LFS, these are the instructions you should follow for your formalin dip:
METHOD 2 (DIP) FOR THE PREVENTION OR TREATMENT OF FISH DISEASES
(a) To a clean, non-metallic container (i.e., a plastic bucket), add one or more gallons of fresh tap water treated with Kordon’s AmQuel . For marine fish use freshly prepared saltwater adjusted to the same specific gravity (or salinity) as in the original tank. Make sure the temperature in the container is identical to that in the aquarium
(b) Add 1 teaspoons of Formalin·3. This produces a concentration of 100 ppm. formaldehyde.
(c) Agitate the solution with an airstone and adjust for a moderately strong flow of air.
(d) Remove the fishes to be treated and deposit them in the container for a treatment period of not more than 50 minutes. Immediately after the treatment period, or if signs of distress are noted, remove the fishes to a previously prepared recovery tank. The fishes may be returned to their original tank, but the presence of the original disease-causing agents in the tank water may result in a reoccurrence of the disease condition.
(e) Observe recovering fishes. Make sure that tankmates do not molest them during recovery.
(f) Repeat treatment as needed, every week. Each treatment is very stressful to the treated fishes. Do not reuse the dip solution.
For additional information on treating fishes with Formalin 3 by Kordon, see the following web page:
Click here: KPD-54 Formalin-3
If you get another brand of formalin, just follow the instructions that it comes with for a concentrated bath or dip (not prolonged immersion or a long-term bath).
Best of luck restoring your seahorses to good health again, Tammie!