i was at keen reef today and saw a maxijet 400 in tims reef tank. it had a funny looking end on it. tim told me it was a mod kit he sells and would turbo charge a maxi jet 400 .so i bought one for mixing salt water. it felt like i stuck a 400 hsp v8 in a mazda miata. i figured it would work ok ,but man this thing is incredible. thanks tim