My husband's Discus have been suffering from "Hole in the Head" and "Lateral Line Erosion" for several months. We've tried all sorts of treatments, to no avail. In the past, we'd had one or two come down with it and we'd pull them out of the tank and treat them with raised temperature and metronidazole until they got back to eating and looking well. This time, it's all of them. We've lost several of the larger ones. The tank has an automatic water change system that swaps out about 10-15% of the volume each day, plus we do large water changes (60-70%) weekly. The water source is Montgomery County tap, which is moderately hard (higher GH than KH) The discus came from Hans and the other fish in the tank, cichlids included, seem completely unaffected. They get a home-made food mix that contains a small amount of beef heart, shrimp, freeze dried krill, freeze-dried soldier-fly larvae, Vita Chem, fruit, spinach, and a variety of prepared, high quality, pellet and powder foods. I started making their food about a year ago because I felt he was relying too heavily on beef heart and blood worms.
Symptoms include flashing/scratching, holes forming in fins and the body (near anal fin), swelling and what almost looks like pimples behind pectoral fins, plus the typical symptoms associated with HITH/LLE. Treatments tried over the past several months include:
* Proform- C (improvement for about 1-2 weeks following completion of treatment).
* General Cure (Praziquantel + Metronidazole)
* Metronidazole in feed
* Angels Plus Red and Orange antibiotic flakes
* Fenbendazole (Safe Guard)
I always give a couple weeks (at least) between treatments and observe symptoms during and after. While Proform-C had some impact, it wasn't lasting. It's a tough treatment to do on a 300 gallon system this time of year because my hot water heater does NOT hold up to 75% water changes on the tank. I'll probably try Minn Finn next, as I'm wondering if this is the result of some sort of resistant fluke. I did borrow a microscope and have been planning to try to do a scraping of one of the more drastically impacted fish, but I'll openly admit I'm not very good with a microscope and I've had trouble finding the time/space to get it set up where it won't get knocked over by my kids.
I honestly hate discus, but my husband loves them and every time I suggest we not get any more he pitches a fit. What I hate more than discus is watching fish die. I'm fortunate that I almost never deal with illness in my own tanks, but his tanks are enough to make me want to leave the hobby some days.
Does anyone here have any thoughts on trouble shooting this, or even just experience dealing with it/the ability to commiserate?
I had understood that hole in the head was related to high nitrate. Some areas of Maryland have very high nitrate in ground water. If you get your water from the city, they are required to tell you what is in the water when you ask.
I personally have more experience with saltwater fish and freshwater shrimp disease so I am not much direct help. If the lateral line issue is a result of bacteria potentially you are dealing with a resistant strain after your previous treatments. If the discus are all lost it may be worth a system restart. From my saltwater experience there is a theory that carbon dust can cause lateral line, not sure if that could be true for freshwater. Another thought is if anyone has a microscope they could do a scraping of the effected area, but this would require some idea of what to look for which is difficult. Dealing with unknown fish disease is a frustrating task. Hope it works out for you soon.
Hmm interesting. So far none of mine show HITH. I’m guessing yours even eat better than mine. Mine only eat blackworms and occasional bloodworms.
@linus_cello - are the Discus Manuel is talking about the same ones I got from you?
Hi Becca,
I was going to start with Hans Discus but then Brett Mowbray (onthetee) posted on this (PWAS) forum (about 3-4 months ago) about several discus strains fry he was selling.. In the recent past Linus got several discus from him and praised the quality of discus that Fred has. So I ended getting about (14) 3" discus and they are doing great. Fred is a dedicated discus breeder and he gave me several tips for keeping healthy discus. You can find his posting and pictures (as well as Linus comments and pictures) on this forum.
Manuel
@mhmoro where are you getting your Discus these days?
Hi Becca,
I understand perfectly what are you going through with the discus health issues. Few years ago I lost several large beautiful discus due to Hexamita sp. infection. Now I am having discus again but decided to follow the advise of a discus breeder that suggested to have a UV light water sterilizer. So now I have it running all the time. As you know this will kill any potential pathogen in the water. In the recent past I had the opportunity to interact with Dr. Thomas Waltzek, a veterinarian at the University of Florida with expertise in ornamental fish diseases. He made the comment that (as we all known now) that you have to be extra careful wit discus fish, they are extremely susceptible to several potential microbial pathogens that are lurking in your tank, even with all the water changes. Discus are in a completely different category regarding susceptibility to become sick. Other fish will be perfectly fine but not discus. Maybe due to the intense inbreeding and selection that has occurred with discus is that they also were selected (inadvertently) with weaker immune systems. Anyway I have contacted Dr. Waltzek and ask him for his opinion about your situation. Let's see what he will advice.
I think the Hans discus have poor genetics which makes them pre-disposed to HITH. Something I heard was that in Germany, these discus get such great water w/ UV, and the same is needed of these problems show up. What about a UV sterilizer?