1. Extremely large and a eye sore.
2. Need ato to keep the level right inside the skimmer. Need to always adjust the valve to get dry skimmer cause as the level drops, you get wet skim and possible flood. Flooded my house twice this way.
3. Prone to flooding the house when first starting up. You need to close then open the air valve at the right moment to get the suction going.
4. Can not clean properly due to design. Only way is by vinegar bath which doesn't get the plumbing properly clean.
5. Does not skim well and produces large bubbles.
6. If the impeller gets cleaned, you need to adjust the pump house 5 or 6 times prior to it starting properly.
7. Produces tons of microbubbles regardless of how broken in it is. The sponge helps somewhat.
8. Cheap parts and design. Sections broke while cleaning.
9. Never buy another chinese skimmer again. Next time it's german for sure.
10. Jay Leno asks Michael Jordan if he can still dunk now that he is retired. Jordan says "What are you stupid?".