I'd remove it from your reef tank. 7.99 isn't worth risking your tank. Plain and simple, they don't belong in a reef tank, they lied to you. Theres no way it will be able to fight the suction of a power head. Its just not possible long term. Do a search for Jelly fish, don't believe what a online store is trying to push on you. Its a shame stores like that get away with stuff like this.