Newborn larvae not eating bbs

This is my second time getting babies and I never had an issue the first time. I hatched my first brine shrimp probably 2-4 days after the first ones made it out of the egg. I put the baby brine shrimp in the tank and I didn't see much of a response from the larvae. A few them did a little jump but not enough that I thought they were feeding.

I fed them at night and by morning the brine shrimp were dead, none of the larvae seemed to have orange bellies, I moved the larvae to a new tank rather than trying to take out all the uneaten dead shrimp. I fed them again within 24 hours, this time during the day, and AGAIN nothing was eaten, none of them have orange bellies and all the shrimp are dead.

The larvae are about 1 week old by now and about half of my axolotl larvae have died, the rest will die soon if they don't eat.They haven't fed since they were born, they're obviously starving to death. I don't have access to any other live micro foods where I live....can anyone please tell me what I'm doing wrong?

Have you changed your water conditioner? I had a similar problem with the first two batches of eggs I attempted to raise, and I tentatively concluded it was the water conditioner (an ammonia locking one). I haven't had problems since I started just using naturally aged water or a simple water conditioner.

Good luck!