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!
A rainwater collection system is something I really want to start using. This is a great tutorial on how to install a rainwater collection system! Co takhle udělat přepážku v trubce a tím rozdělit přívod a odvod vody.