Is full of good?Or part of the air?If you want to stay in the air, how much water suitable?Do you have to keep the air out when the lid is covered?
I think it's good. Because water is much more heat, no air is easy to heat conduction to play the role of heating. I have been using this, the effect is very good.
The premise is to use a good quality hot water bag, you can charge 2/3 of water, the air discharged, so that it will last longer heat, it is best not to have air. Hot water before using hot water temperature, so that the use of hot water bags will be extended!
Hot water bags can not be filled, irrigation 2/3 can be.Hot water bag use matters needing attention:1, should not be poured boiling water, hot water around 90 degrees Celsius, so as to prevent premature aging of rubber.2, do not fill too full, poured into the hot water bag 2/3 on the line, and then remove the bag of air, plug tightening.3, after running out of water to be drained, and then blow some gas, in order to prevent internal adhesion, upside down.
