[fishtk75]

I read as Coral need QT that ICH hitchhike what and how do you QT your corals?

[pogodzib]

Ich can fall off fish and end up on corals, but they are not a host for ich. Ideally, all corals would get placed into a q-tank for 4-6 weeks so that you can see if they have any parasites/bugs on them such as AEFW, LRB, etc... but that involves having not only a q-tank but also either a second tank with proper lighting or never using copper in your q-tank (which is unlikely). Personally, I do try to quarantine all new corals for a short period of time and do a coral dip prior to placing them in my q-tank. My coral q-tank only has a cheap 4 bulb T5HO lighting unit over it so it isn't ideal for SPS corals, but suffices for the relatively short time that they are in there.

[fishtk75]

What is used for the coral to kill off the ich on coral?

[pogodzib]

Nothing. Ich dies off on it's own without a host and the host needs to be a fish. The only time during the cycle that the ich parasite would be present on a coral is if it fell off a fish and landed on the coral during the reproductive stage.