I think I have a gen 1 kalk reactor. I previously used it without issues on my old system using an aqualifter to feed it. My aqualifters are all dead now so I am feeding it with a Neptune dos qd, but when the dos comes on the maxijet starts leaking at the twisting part of the connection. I have tried two different pumps. Is there a better pump I can use that will fit this reactor that can handle the pressure without leaking?