I am planning on starting a small, vertically-stacked aquaponic planter, with two beds and a small aquarium. Because my climate experiences periods of drought and near-freezing lows during winter, I am doing this indoors, which means I'm very space limited. As a result, I am planning a small system, with a ~12-gallon aquarium and two beds, one with ~3' of vertical clearance to the growing lights and the other with ~15".
I'm currently limited to maximum planter dimensions of 16x8", which I understand is quite small. If essential, I could expand to 16x12", but no further.
My question is: Do plant spacing guidelines change for aquaponic systems?
If I find guidelines suggesting 5" spacing (for basil, as an example), does that recommendation change for an aquaponic system, or does the fact that it's an aquaponic system not matter?