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!
Mike Stewart, the best bodyboarder of all time, has turned The Hawaiian rode his first wave in before the first manned mission landed on the Moon. The legend of bodyboarding is still at the highest level.