you could add some fish to your water reclamation tank for a small aquaponics system. Grow a few plants to feed the fish and this forms a closed system. There is no need to fertilize, the fish do it for you! Permaculture at its finest!
13 Multi-Level Backyards To Get You Inspired For A Summer Backyard Makeover! // This backyard has an area at ground level with large stone slabs and firepit, and a second elevated area with garden spa (Elevated Patio Step)