This is another one that I am testing the reefing gods theory mp40 are the ish no discredits on them but like most things when someone make me sick by been a sale person for some thing I try to work around it well most people say that to grow out sps u need a mp40/tunzi so I was going to get a mo40 but now that am kicking that idea in the nads I don't even think am going to bother tracking one down my sps are growing some the little tiny frag I got few months back are almost mini colony fragging stage