Summary

The model is 1:101 scale
Suggested print size: 200%
The vertical planters are made of 6" x 8' PVC pipes, connected with 2x4s. Two 250w HPS bulbs hang in the center of each plant module.
The basin is made of wood, and waterproofed using pond liner. The Fish Modules can be made of chicken wire (or smaller netting) wrapped around a simple wooden frame, and rests in the basin.
The plant modules sit above the fish bins and water basin, and are watered using water directly pumped from the basin.
The basin is sized for 2x2 plant modules, but can obviously be scaled to much larger sizes. (hence the modular title)

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(Aquaponics farm.stl is not printable)