So you would need 12,500 ft2 of media. Media is usually rated by surface area per ft3. Sand is 7800ft2 per ft3, lava rock is 16 ft2 per ft3, I have no idea what Deer netting would be.
55 gallon drum can hold 7.35 cubic feet of media when full.
A 7ft x 100ft roll of deer netting has approximately 200 square feet of surface area, give or take, depending on brand.
Another option for this type of filter is pvc ribbon. It is approx. 250 sq ft/cu ft.
