Put the sinker into a pot large enough, add water to the sinker, simmer for about 2 hours each time, then leave it overnight or 12 hours, and pour out cold water. You can repeat the operation until the sinking wood stops spitting. This method works well.
Put Shen Shui Mu into a container filled with hot water to make Shen Shui Mu spit out the color naturally by repeating it back and forth. The longer the soaking time, the better. During this period, the pigment can be washed away by changing water repeatedly. The principle is to make the pigment molecules in submerged wood move quickly at high temperature and promote its rapid discharge.
Why does heavy wood turn yellow?
Originally, due to accidents or man-made reasons, the submerged wood was immersed in water for a long time, which led to the change of wood structure, the exchange and reproduction of minerals and microorganisms in wood, the increase of wood proportion and sinking to the bottom of the water. But in the end, heavy wood is still wood. Even after water treatment, it is inevitable that some substances containing pigments will remain, such as sugar and resin.
In the process of soaking, soaking in different colors and pH values will also lead to yellow-green changes in water quality, or brown water quality.
From the point of view of aquaculture of aquatic plants and aquatic fish and shrimp, if it is not a special species, the water after drowning is slightly acidic (drowning sold in the market), which will not bring obvious and immediate harm to living things, but in the long run, serious drowning will still affect the water quality, because the straw tank is a closed ecosystem in fish tank landscaping.
The above contents refer to Baidu Encyclopedia-Sink Wood.