There is a type of plastic breeding tank. Maybe can try those.
Make sure there is no shrimp or any bottom dweller (cory, loach,..) in the tank wil help too.
I seen my black neon spawn several times in my tank but so far no fry have survive yet (i did not separate them into breeding tank).
If you do have fry, Hikari's First Bite will help. Try not to feed them wit live food 1st or they will end up not taking dry food when they grown. I lost who batch of betta fries as i fed them with live atermia 1st month, and all end up not eating any dry food.
Now i have the second batch start with Hikari's food and all doing great for past 2 months.
IMHO, it really pain in the A
need to hatch Artermia every other 2-3 days in the Starbuck plastic cup..
FYI Artemia need to detect salt(i use aqua salt
) for hatch (i tried without salt and they wont hatch), and they are really tiny to scoop up with any other method so as you feed, your fry tank's salinity will increase in time and you need to partial water change every few day to control the salinity which also quite dif as the fries is also tiny winny and adventurous.
But if you still want to try live food, i use Azoo's Artemia which i rated 8 out of 10.
20ml stringes around will be handy too. The 20ml attach with 20-30cm air
tube will be good tool to catch the tiny fries or use to serve fries with the hatch Artemia Latte.
HTH