Fish Fan 寫:
leoo11: We have to be very careful when we read those articles. When the 雨淋管 is immersed in water, how can there be oxygen inside the tube? 雨淋管 only hurts the CO2 dissolving rate only if it placed above the water level. When the water flows from the top and strike the surface of water that generates O2 with air bubbles, it will hurt.
Sometimes, we have to understand the reasons why the statement could stand, then we know what should/ should not do.
This is why I was asking if i put the 雨淋管 into the water just under the surface of the water.
By the way, you are very helpful to me.

fish master.