No light requirements. They're not photosynthetic. Moderate to low flow. If it's too high they tend to stay buried. Mine have done fine at regular reef-tank temps, 75-80. You need to feed them meaty foods. Adding a bit of selcon to the food is pretty much good for any anemones. I just use a turkey baster to squirt them with bornemans mix, or a mix of cyclopeeze, mysis, brine, etc...
You can also feed silversides,chunks of fresh shrimp, scallops, etc... be careful with fozen seafood, most of it has preservatives added that are not healthy for fish/critters. They tend to stretch out more after the lights go off, and may be pulled back in the tube for long periods of time otherwise. The largest one I've got will stay pulled in for days at a time during the day, only coming out at night, then it'll stop and be out all the time for several days. They're one of my favorites to watch eat.
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