Can anyone give me some info on hydroids i have a couple of questions so first ill start out asking if anyone knows is there a medusa stage to digitate hydroids? That looks similar to colonial hydroids except tiny and clear not red.? Also is there a nudibranch or other organism that feast on these? Also has anybody remedied a actual way to eliminate them?? And then last question im setting up a large 8ft 250 gallon reef most of the corals have been growing out in a 30 long that has the hydroids. Is there any way im going to be able to transfer anything from 30 to 250 with out contaminating the 250 with these droids. There are probably 3 dozen differet highend coral species frpm acros and montis to chalice and polypsi anting to eventually transfer over can any body give me advice on what they would do in this situation. Thanks in advance any help greatly appreciated