Namely that we must change the socket for UK plug, but the pump is very very good job, very powerful flow. Another negative point, the flow control is very precise adjustment despite a button. Anyway I of valves 2 outputs. Included in delivery: 2 bubblers, 2-return and silicone hoses (not transparent and stiff)! And I recommend full and silent as many accessories! I think I'll take a reserve.