Camallanus Worms... Please Help!

I don't even know what to do at this point!! My female guppy has camallanus worms coming out of her vent, which hints that all of my fish are infected with the parasite. I went to Petco and was given Herbtana, and after spending $20 on a huge bottle, I found out that Herbtana is not effective on fish already showing signs of infection.
My guppy looks like she is in so much pain. Her stomach is becoming sunken in, and she hasn't eaten in a week. She won't eat. I know I need to treat the whole tank for the worms, but it's seeming absolutely impossible. Right now I just really want to get these out of her and get her healthy. PLEASE, is there absolutely anything I can do for the individual fish?? Is it possible to take the worms out myself, or is it better to euthanize her?? It's awful having to see her like this, and I can't believe I wasted 7 days on Herbtana.
Any sort of remedy that involves eating the medication will most likely not work, considering she's not eating at all. Unless anyone knows of something that she would definitely eat.

And finally after that, what to do about the whole tank?? This parasite seems absolutely impossible to battle. I appreciate any help. I'm just so frustrated at this point and cannot find any information that will help me with this specific situation.

20 gallon tank with 4 Cory catfish, 8 Neon Tetras, 1 Guppy, 2 female Bettas
I have a heater, filter, and air pump. I have a sand floor, not gravel.
Tank was cycled before adding fish and has been running about a year.
Parameters are very good, apart from high nitrates.

 

HI welcome to FishLore!!
I'm sorry you're having to deal with this. Here's a sticky in the disease section:
Camallanus Worms

I'm sure other members with experience will see this and be able to give some tips.

Good luck!

 

So sorry this brings you here, but welcome, we can help

I have dealt with these worms, so have many members here. But first, you mentioned high nitrates, how high? It's important to keep nitrates below 40ppm. Myself I aI'm for under 10ppm. You will be doing lots of water changes if you want to battle these worms, but pls keep up the water changes going forward.

Ok, you'll need to order a dewormer. Most have used Levamisole. It is dosed in the water.
Here's a great link for info and to explain dosing.
Levamisole Hydrochloride — Loaches Online

I'm sorry about you're guppy, but if you feel she is suffering, there's a good chance she won't make it, so I am giving you an opinion on if to euthanize

I'm sure others will be here soon to help.

 

I've dealt with Camallanus in guppies before as well. I used Levamisole, with great success. The link angelcraze put above should be very helpful and I heavily advise following it. Some tips to remember:

- Treat ALL fish that are in the tank with the fish showing symptoms. It's easiest to do this just in the tank everyone is already in.
- When you dose it, make sure to cover the whole tank with a towel or blanket until you do the water change to remove the dose. Levamisole is light sensitive and will molecularly break down if you expose it to too much light.
- The fish might act weird when they're exposed to it. It's alright - you just need to follow through with the treatment.
- Vacuum the gravel when you do the water change to remove the levamisole to pick up any worms that have fallen out.
- Make sure to do a follow-up treatment a month later to make 100% sure everyone is treated and everything is gone.

 

I've dealt with Camallanus in guppies before as well. I used Levamisole, with great success. The link angelcraze put above should be very helpful and I heavily advise following it. Some tips to remember:

- Treat ALL fish that are in the tank with the fish showing symptoms. It's easiest to do this just in the tank everyone is already in.
- When you dose it, make sure to cover the whole tank with a towel or blanket until you do the water change to remove the dose. Levamisole is light sensitive and will molecularly break down if you expose it to too much light.
- The fish might act weird when they're exposed to it. It's alright - you just need to follow through with the treatment.
- Vacuum the gravel when you do the water change to remove the levamisole to pick up any worms that have fallen out.
- Make sure to do a follow-up treatment a month later to make 100% sure everyone is treated and everything is gone.

So sorry this brings you here, but welcome, we can help

I have dealt with these worms, so have many members here. But first, you mentioned high nitrates, how high? It's important to keep nitrates below 40ppm. Myself I aI'm for under 10ppm. You will be doing lots of water changes if you want to battle these worms, but pls keep up the water changes going forward.

Ok, you'll need to order a dewormer. Most have used Levamisole. It is dosed in the water.
Here's a great link for info and to explain dosing.
Levamisole Hydrochloride — Loaches Online

I'm sorry about you're guppy, but if you feel she is suffering, there's a good chance she won't make it, so I am giving you an opinion on if to euthanize

I'm sure others will be here soon to help.

thank you very much, unfortunately she died last night i’m relieved at the same because she doesn’t have to suffer anymore, and now it will be easier to treat the whole tank

 

thank you everyone!!