(1) materials: many materials are available. For example, you can eat leftover fruit, peel, orange, banana and apple. You can also use egg shells, bones of various animals, surplus milk and rice. Rotten vegetable roots and leaves are OK.
(2) method: put all the collected materials in a pot and cook for about 40 minutes. Then take the above clear liquid, it can be used to replace the nutrient liquid
(3) precautions: these materials have peculiar smell, which is not easy to remove after boiling, so it is better not to use too good pot. In addition, the amount of one-time made is the most many. If you can't use it, you don't have to do it often
(1) production steps: take out a proper amount of soybeans and put them into a glass cup. Plus water, to moderate, not too slow, need to leave part of the space. Then, place the cup in the sun. Two or three days later, we can see a lot of gas coming out of soybeans. After about twenty days, the water will become very muddy. It's about that time. These water can be used to replace nutrient solution, the effect is very good, and natural pollution-free
(2) precautions: these water can not directly water the plant, which may burn the plant. It needs to be diluted and added with a lot of water.
