07-12-2012, 08:05 PM
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"things that grow and spread fast and have tentacles are typically not great." well..
Just starting to cycle my tank. Ammonia levels are just starting to rise, about .30 right now. I've noticed some small polyp or anemone looking clear creatures popping up all over everything. they came in on some tonga live rock I just bought. they have a small stalk, about 2.5mm long is the current biggest one, with a bulb at the end with a bunch of hair thin tentacles radiating out from it. They grow extremely fast. there's about triple visible today from what there was yesterday and the ones I saw yesterday are noticeably bigger as I can see them clearly without a magnifying glass today. is this something I should be worrying about or will the coming cycling stages wipe out whatever this is? they are all fully extended constantly and dont pull back to the rock upon being agitated as I've heard Aiptasia does. the rising ammonia levels dont seem to be bothering them though all of the feather dusters I've noticed on some of the live rock no longer show themselves. I've searched the internet and keep coming back to either hydroids or Aiptasia. also, I've got bristlworms. it seems this tank is off to an interesting start