Update:
A few weeks ago I came home from work to find my OM flow diverter was no longer diverting flow. I took the unit apart and found the drum that spins and switches the flow back and forth had sheared off into two pieces. I quickly ordered a new drum and meanwhile made a quick "bush fix" and put it back together with super glue thinking it might hold until I received the new part. Well, it worked until I got home from work last night and had flow on only one side. The glue couldn't hold any longer. I knew this was only a temporary fix anyway, but I still haven't gotten the new drum (close to a month now). So going forward my plan is to completely remove the OM diverter and in it's place install an Ecotech Vectra S2 DC pump. I think this will work even better for this tank and free up space and less equipment under the stand. It's already been ordered and should be here in a couple days. I'll only have to tweak the plumbing slightly to get it plumbed in. I'll show some new photos once it's all in.
This was my fear with an OM diverter from the get go and why I avoided it for my closed loop setup. I went with Dual vectra M2's instead to still get the alternating flow I wanted.