I have had the typhoon for a while and it works very well for its cost. I never had a big microbubble problem in my tank, but some others on this board have. I really like the typhoon and its top notch construction. Be sure to order the anti-siphon unit from D&D marine (they will send it free) for your typhoon. I clean mine once a week, and shoot a little vinegar in the venturi once a week to keep it clean, otherwise little to no maintenance needed.