Baby seahorses

I'm going to check into sponge filters for the seahorses, so I'll get an extra couple for other purposes. Does the air just flow through the sponge to some extent for internal circulation?
 
A good size sponge filter typically has a 1/2 inch tube going through the sponge down to three quarters of the way. An airline is inserted halfway down into the tube. As air rises through the tube, water is carried along with the air and exits from the top of the tube. This airlift movement siphons water through the sponge trapping detritis in the sponge.

A sponge filter is great for clownfish babies that are 30 days old or older. If your seahorse babies have settled and are hitching to macroalgae or some other objects well, I suppose you can use a sponge filter without any problem.
 
G, I've got 2 10gs you can use as long as you wish. 1 has some silicone remnants inside from baffles and the other is derimmed but holds water.
 
Hey Mike,

We lost both males due to bacterial infections (despite treating them and them seeing to have recovered...). I'm hoping things will settle down a little soon so I can try to find some more males and get these females going again. They're lonely:).
 
Sorry you lost them. Seahorses can be tricky. I really want to get some more dwarfs sometime. They did very well until the heater overheated their small tank.
 
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