RDWC system with ebb and flow principals, using only 1 air pump.

I feel this is the best of all the different hydroponics systems... its mainly a RDWC but ive incorporated a center siphon drain in each set or 2 plants... once the water reaches the top of the standpipe a siphon is created draining the bin down to about 4" from bottom.

By having this ebb and flow setup i won't need a top feed setup.... I will be able to easily adjust the height with different pvc pipe lengths... I will be able to adjust how long it takes to fill up the sites by allowing a portion of water to drain out the front 1.5" pvc pipes... once the siphon hits it drains the bin down 2× or more times faster than filling.
**Note during testing... without any drainage and a high pressure submersible pump 1 sits (about 72L ) filled up in 70 seconds... then siphon hits and drains down to the 4" left in bottom mark in 30 seconds...