Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
I would leave them both in there and just get a digital timer like this one:
http://www.ebay.com/itm/WOODS-DIGITAL-TIMER-2-SEPARATELY-PROGRAMMABLE-3-PRONG-OUTLETS-/290643259175?pt=LH_DefaultDomain_2&hash=item43abb02f27
(or two individual timers)
and program them so they will run opposite each...
Sorry, I guess I didn't explain that well enough. Place one pump on the right side of the tank toward the rear of the right piece of glass, direct the flow diagonally toward the left front corner of the left side of the tank. Place the other one on the left side of the tank toward the rear of...
It looks like if they are both running at the same time there will be too much flow. Why not put them on opposite sides of the tank so that their flow is diagonally across the tank and run them on a on/off, two hour cycle using timers?
I know a few people on DVRC who got them, and a few have changed to Apex or RK's. As I understand it they work well, but you really need to be good at coding.