DIY Compost teas are kindof hard to master. However, Teas are not considered a fertilizer. They are a charged substance with microbacteria and other beneficials with food for them. They go to work breaking down the fertilizers you put in your soil. For a full explanation find the Compost Tea Task Force report. In creating your own fertilizers, you break down vegetable matter, composted fecal waste matter, leaves, ashes, smashing up dolomitic limestone, Using acid and fulvics to leach silicates and potassium out of K-feldspar and quartz... hehe
The stuff I would recommend you try would be vermiculture - cultivating worms to create worm castings. These castings are perfectly balanced for plant life, and are a natural time release fertilizer. You cannot burn your plants with it, and it creates bacteria that out compete other bacteria. This crushes Rhyzoctonia, Fusarium, Damping Off, Bacterial Wilt, among many other things.
Try composting cotton burrs as well. Create your own charged soils using worm castings and other composted materials.
As for hydroponics, I would stay away from home made organic fertilizers.