I have drilled the grow beds to begin fitting the bell siphons in there. And just in time too, because look what arrived today:
Now I just have to come up with a good way to clean it all. I was thinking of putting it inside a cooler (with the little drain hole on the bottom). That way, as I wash them, the dirty water will just constantly drain out.
I thought about doing it in the grow beds themselves, but they're much heavier to move and I don't want to drain the dirty water directly underneath them (which will create a lot of muddy dirt in the area).