Illness/Sickness: HELP! 100+ babies have cotton wool fungus and are dying!!!!!

HELP!!!! I have become an accidental mama but love each and every one of my babies! They are around 8 weeks old and range in size from around 65mm to 20mm, and there are over 100 of them.

They are fed live blackworm and on Wednesday the new batch I picked up from the pet store didn't look too good, some were dead. I was desperate as the delivery had been delayed by 4 days and I had been trying to get them eat frozen brine shrimp to no avail. I picked out what live worms I could rinsed them and threw the rest.

2 days later I noticed a few babies had this kind of fungus on their little legs, the next morning half the tank did!! I treated the water with Tri Sulfa Tablets, but they are starting to die!!! Each day I am losing more and more

WHAT SHOULD I DO???? Salt bath? Put them in the fridge? HELP!!!!!!!!!

Have I killed my babies by feeding them sick worms? I'll never forgive myself!

Salt baths are best for treating fungus. If you haven't read it already, a guide to salt bathing axolotls can be found here.

Will you able to fit them all in the fridge? Bear in mind that you will also need to keep extra water in the fridge to use not only for the daily water changes, but also the salt baths. If you can keep the water cool enough, fridging may not be necessary.

Are you able to post a photo of the affected larvae?

THANK YOU for your reply.
OK, they are in the fridge.
Here is a pic of one of the most recent ones who didn't make it
The fungus seems to be mainly on their legs rather than their gills - it is very light and fluffy and in most cases easy to pick off although one of them lost a leg when I attempted to remove the fungus, so I won't be doing that again.
All up, I have lost 18 in the last 48hrs!

WOOPS! Pic might help!

Here are the rest of them in their salt bath