I believe the valves are interchangeable.
I will be looking for just a bit more light for the 3x3, a 350R sounds perfectly suited for this space.
I'd like to find room for a 2x4 to house the 100R's..
Sure are. Another set of autopots will be purchased soon.
So, the black aquavalves are version 4, while blue are the 5 with 1/2" tubing? Is the 5 designed for the larger pots?