In 2017 I said to myself:
"but now the bean animal drain system has been negatively affected... the riparium planters are creating a bottle neck of water flow between the siphon and open standpipe sections... the planter is blocking the most of the flow as its very close to the eggcrate which I did not account for when designing the overflow... the water is higher around the open pipe and lower around the siphon... so no matter how much I adjust the siphon flow with the gate valve I always have too much water trickling down the open standpipe creating unwanted noise... the system still works, it's just noisy!"
And now that I just filled the overflow with freshly planted Spaths in pots, guess what? I knew I had them hanging on the side of the overflow for a reason........