Bell Siphon – Stand pipe top needs to be level. A ton of water and media can distort wooden, metal, and plastic grow beds with Bell Siphon looking like the Tower of Pizza. Ooops. Put proper support under grpw bed and support with auto jack for fine tuning.
Murray Hallam is ripping out his large commercial PVC tube system in Australia due to temperature problems with water overheating in pipes. He is converting several large greehouses to grow beds, an expensive change. Congratulation to Murray for admitting a mistake publically. It is a rare, good person to take responsibility in this 21st Century..