Very cool. Thanks for this thread. I am considering the same thing. I am very interested that you ran this under the aquarium as I intend to do. That is my chief concern as someone who never used a reactor before. Would a pump be able to send the water up 1 foot, down 4 feet to the reactor, get a proper tumble/flow for chaeto and then return the water up 4 feet to the display? Have you have any issues with pressure, or is it working fine? Any pressure stress anywhere through the canister or tubing? Still using the same pump? Thanks!