HELP I.D. ALGAE

[mabel_photo6]

Heyyy I got a Sea Hare to help me out. lol It's a trippy looking creature!
My water change will be coming up soon and with filtered water.

[brewercm]

I agree after having briopsys myself (really bad) that at that size you would most likely see the feathering effect. Consider a bullet dodged since I think that may be the only thing that could kill it (next to a pool chlorine tablet over a month). Not great for the rest of anything living on the rock though.