I've had sea whips, you don't want it to bend over from too much, but a gentle flow won't keep the alga off, it needs a good steady flow to go over constantly, it can't be in the light.Not strong current. They'll start to bend away from the flow. Just a steady, gentle flow to keep anything from settling on it.
LOL...I'm going to do like Vinny Barbarino on Welcome back Cotter..."I'm sooo confused!"Some Sea Whips are photosynthetic so MUST be in good light. These are the ones compatible with captive environments.
So which one are we looking at in the picture?Summary -
Two types of Sea Whips:
Photosynthetic - Require good lighting and some supplemental feeding. Experience level - moderate. Can be kept long term by most hobbyists.
Non-photosynthetic - Do not require lighting but require heavy zooplankton feeding at least twice daily (Dusk & Dawn). Experience level - very difficult. Typically perish within several months.
It resembles one of the non-photosynthetic Gorgonians. Perhaps Diodogorgia sp.
Non-photosynthetic Gorgonians are incredibly difficult to keep in a small captive environment. They require lots and lots of zooplankton (they will eat dead zooplankton). The ones in the photo appear to be starving.