Hi, we've gone up in the roof and now have the master bedroom and en-suite away from the kids. In the main bathroom we have a positive head shower pump which works fine. the en-suite requires a negative head pump as the head is above the water tank, is there a pump that will power both types of shower. O r should i invest in a seperate pump for the new shower? It's just not fair that the kids get a pulsing shower and we only get a dribble.