Hello all... So, I just finished my first bell siphon and have started testing it out and messing with some different variables.  Right now, the drain pipe is 1/2 inch pvc with an 1 1/2 reducer acting as a funnel, with a 3 inch pvc as the bell dome over the top.  It functions, and these are the results I am having: With a trickle of water input, my 28 quart grow bed will fill in about 8 minutes,…