I was wondering how the build was going? Did you get a chance to view "Pipe Siphon by Apollo", lots of info & pictures.

Off subject but, if you have tilapia you should plant a sweet potato plant. Probable one of the easiest, fastest growing plant every, my fish love them. I will cut about two 5 ft. pieces of the vine and throw them in the tank , 2 days later all the leaves are gone & I pull out the vine and do it all over again.

Up load us some pictures a your build, Good Luck