[kwajgal1990]

Baby zosterae are not nearly small enough to get sucked through the filter. They're small, but not that small. I was surprised the first time I saw them. The babies are big enough to eat baby brine from the beginning.

My erectus pair had babies last year, and the zosterae babies are actually not that different in size. The zosterae give birth to fewer babies (3-35 typically) than the larger seahorses, but the babies are actually hardier and seem more well-developed at birth.

I'm not talking about the sponge filters that go on the inside, like the Fluvals. The pores on those are too big, even if you cut one to use on the intake. I use black cylindrical small-pored sponges. Most of the fish stores in my area sell packs of one or two of them. Lots of people around here use them in their fry tanks. They are commonly used in ponds, also.

I'm at work right now, but if you need one, I can look up the brand name when I get home. Some of the baby brine do get sucked through, so a couple of times a day, I turn the filter off for about a half an hour while I feed them, and I clean the sponge very regularly. My seahorses are doing great. I have one batch of 3 week-olds and one batch of 1 week-olds as we speak. Let me know if you want more info on the sponge.