Hi,can anyone help l would like to know what demotion of the jebao vap2500m and 3500m and the 5000m and the 7000m and last of all the vap 9000m I would like to change the pump in my redsea max e260 the return pump plus the 2pumps that is situated in the back sump where the pipes go to the bottom sump.and if you can recommend which one to get? ( thank all.)