Those Hobby hatcheries really are great. So simple and so much less hassle than the normal hatchery with airline setup. To feed, you just lift out the little cup and rinse the BBS under the tap (it has the right gauze built in so you don't lose any). I then just use a syringe of tank water to wash the BBS out of the cup and into a test tube from where I share them between the tanks. The other great thing for me is that you don't end up with a million BBS all at once on day one, but a slower hatch over the course of 3 days or so (I'd say 40% hatch on days 1 and 2, 20% on day 3, and maybe a few on day 4 if you leave it that long). Takes only a few min to reset every 3 or 4 days, just needs a quick rinse, new salt water and a small scoop of eggs. The hatch rate and quantity is perfect for feeding a few tanks. I get first hatch after about 18 hours, but my room temp is about 29C!
My tip: If you have a largish syringe (50ml good), put the dry BS eggs into that first (pull plunger right out and pour in from top), insert plunger, withdraw it to suck up some water from the hatchery, quick shake to ensure eggs are wet and mixed up, then squirt around perimeter ring of hatchery. I found this better than simply sprinkling into the hatchery where some eggs just sat on the surface and didn't get properly wet, or else stuck all round the side as I tried to stir them in.
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