Snowflakes growing in my tanks.

[ScubaSteve]

My guess is that they are jellyfish. Jellyfish start out as polyps similar to what you saw on your glass and then release several offspring from a single polyp. If they are free swimming I woouldn't worry too much about your urchins and starfish. I'd be more concerned about your corals/fish. But since these are babies they won't really pack a huge sting, in fact, some of your fish might eat them depending on what you have. Take a picture! I wanna see, I wanna see!

[Zoaelite]

Originally Posted by ScubaSteve

My guess is that they are jellyfish. Jellyfish start out as polyps similar to what you saw on your glass and then release several offspring from a single polyp. If they are free swimming I woouldn't worry too much about your urchins and starfish. I'd be more concerned about your corals/fish. But since these are babies they won't really pack a huge sting, in fact, some of your fish might eat them depending on what you have. Take a picture! I wanna see, I wanna see!

+1, the life cycle of a jelly fish is really fascinating but they tend to die very easily in captivity so I would love to see some photos!

[DNoakes]

Does anyone know if there is any fish or invert that will eat Jellyfish?

[DNoakes]

I posted an attachment to my original post. It shows one pic of one of the jellyfish I will upload another pic with this message.

[DNoakes]

Here is another pic as an attachment of the Jellyfish in my tank.

[DiverDude]

Have you tried scooping them up with a net ?

[DNoakes]

I'm trying just about everything on that tank including a dedicated uv sterilizer on it as well as a TWIN 80 WATT UV sterilizer after the sump.

[ALang]

Wow! Someone should go over to your place with a HD camcorder to film this! Should be hugely interesting! Keep us posted, please.

[monocus]

they look like upsidedown jelly fish-they will grow to about 5/8 of an inch and are completly harmless-they feed on light and plankton but nothing i know of will eat them.if you have bright enough lights(metal halide or led)you can breed them and sell them to your local store.they will come back every year.i use to have them before my tank crashed and they are fairly interesting.they start out on a stalk under the rock and will eventually turn a translucent blue

[KeMo]

look on here for them
http://www.chucksaddiction.com/hitchworms.html