Hi,
Newly hatched larvae will probably not eat non-live food.
If you intend to raise these larvae you will need to obtain a live food source ie daphnia or baby brine shrimp.
To get the best nutrition out of brine shrimp you need freshly hatched, so will need to hatch them out yourself.
You need to be prepared, once they hatch you need a food source avaiable as they will need feeding once or twice a day,
If they are in an uncycled tank you need to change the water every day.
They will need seperating so they have enough space, and at one to two months will start eating each other if not kept in plenty of space and well fed.
You will also need to start seperating when they look like they could actually swallow each other.
You need to be confident you can find homes for them all or you will end up having to find space to keep them yourself.
As you can see it is very time consuming and takes up a lot of space.
You need to make sure you dont try and raise too many or they will starve to death, which is worse than the parents eating the eggs in my opinion.
It is far more humane for them to be culled/eaten before they develop into mini axies than for them to starve to death.
I have raised 3 batches of axies but in small amounts my largest and latest was 30 and i have struggled with food sources myself, for various reasons.
If you still decide to go ahead I wish you luck and we are here to help if you need us
Mel