We will see how it goes.

They are on the water's surface in the pool. It's quite evident that their function is to purify the water, as I haven't had much opportunity to confirm this before taking the pool apart.

The summer season has ended, meaning she will have to wait until next year to use it again. However, it should be handled carefully and sent promptly.

The item was shipped quickly. The product is good :) I appreciate it.