What concerns me is the fact that the filter will pull the babies into it.
You say
You could use an air-driven sponge filter, or an u/g filter, or with such a low bio-load in the tank, nothing.
If the tank is a well matured, used, set-up, the parents will take the babies out browsing and no supplementary feeding will be necessary.
If not, and you are going to feed the BBS.
DON'T feed that until the babies are free swimming.
Prolly 4 plus days from hatching.
Wriggling on the bottom, in pits etc, is not free swimming.
Wait for them to come up in a cloud, THEN feed them BBS.
There isn't any big rush.
You may want to take the babies out at about 10 days after this stage too.
I didn't and paid the consequences,
Mum and Dad had a big feed.
Not next time tho.
Good luck
Alan 104