During solar installation, industrial lubricants or detergents were used to insert the vacuum tubes. In your case, the workers may have used a little too much, but that doesn't matter. Do not change the water in the aquarium in the first two months, otherwise it will fail.
The reason why the hot water coming out of the water heater is slippery is:
< p>1. The water pipe inside the water heater may have dirt that can slow the flow of water and make it slippery.2. The water lines inside the water heater may have scale, which will slow the flow of water and make the water slippery.
3. The water lines inside the water heater may have scale and dirt mixed in, which will slow water flow and make the water slippery.
4. The water lines inside the water heater may have scale and dirt mixed in, and there may be smallYour cracks in the inner wall of water pipes, which will slow the flow of water and make the water slippery.