That might be too high. My WP25s would pull air and produce micor bubbles when they were higher than 5" below the water line. You might see it whirlpool and then spit out bubbles.
Oh snap! That's like your whole tank whirlpooling, lol! Mine would only do a little one but that was in a 120. I'll tell you this much....that tank is gonna have plenty of flow!