Nice set-up. Looks like I need to order some of those sprinkler heads. I tried something similar using the ACE Hardware drip system and set it up with a MJ1200 for the pump. It works, but I don't quite get the directed rain effect I wanted. If you don't mine me asking, what are you using for a timer. I find the 15 minute interval causes issues with flooding in my 30gal paludarium set-up.