I have 2 MP40QD's. They are nice and quiet. They will still link to the Apex WXM. But seeing how Ecotech and Neptune are not playing nice anymore these may be the last Ecotech pumps to work with the Apex. If you are plan on running an Apex I'd look at he WAV pumps. It would be cheaper to buy the set than run 2 MP40s. But you will have the wire in the tank.