Yup, mp40 is adjustable but do note it killed my 2 fishes, one I stopped it and a curious mystery went in and the other, a wrasse got shock and dashed in(mr using minimum flow due to space constraint and minimize vibration. If yr length current is there, then 6055 or those non controllable one can do the job cos u still need a controller for controllable wavemaker. Can settle with 6025, 6045 etc for width death spot. . For vortec, the wire is exposed externally and u got to secure it in case it dropped. If yr viewing is front with side covered, aesthetic not an issue, if not, by placin the vortec in the middle look a bit off depending on the owner style. Since yr rockscape up, can test but must borrow equipment. .