Sobo – AC/DC air pump (SB-4000)
SB-4000 (2.8W) 2x3L/min
McMerwe’s Review: Smaller and better than the previous model SB 4000’s. For the price, these are fantastic. It is a sobo product which means it won’t last forever, but its a huge improvement in terms of quality. You also don’t have to buy the batteries separately, so this means you will save on cost in the long run even if you had to replace the unit every year. If it came with a charger block it will get a 5/5 rating. (Rating 4.5/5).