Aquaculture is the symbiotic cultivation of plants and aquatic animals in a re-circulating system. “Break-Through Organic Gardening Secret Grows You Up To 10 Times The Plants, In Half The Time, With Healthier Plants, While the "Fish" Do All the Work.
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!
Lasagna Gardening: the easiest way to start a new garden - with no tilling/digging which is better for your back and the soil structure. I made 2 new veg gardens this way, over weedy grass, last Fall (but you can start one in the Spring)
Plants have best friends just like people do. Marigolds help tomatoes and roses grow better. Nasturtiums keep bugs away from squash and broccoli. Petunias protect beans from beetles and oregano chases them away from cucumbers. Geraniums keep Japanese beet