I swapped out the plumbing fixtures for 17mm Acrylic Lilly pipes today. (See pic post#59)
I like that it tends to disappear vs. the black plastic pipes that came with G3.
Being an Acrylic tank I am limited in my installation options. I wanted to angle the outflow top the opposite end of the tank. But, when I angled the Outflow I was unable to use the suction cups to hold the pipe to the back of the tank.
I found these at Ace Hardware for $3. I attached one for each hose to the back of the stand on the plywood stand top. The hoses fit snug enough to support the pipes.
I decided to not use the skimmer or the Acrylic intake screen. I cut a pre filter out of 10PPI foam. I think I have better flow now as it seemed restricted.
I'm not pleased with seam were the Lily pipe was put together. It isn't noticeable from the normal view distances.