Question about Intex Prism Frame

From my own experience and the experience of people I know, I would advise against using a cover. The water quality remains better without a cover, even if you may have to fish out a few more leaves and insects. It is also easy for leaves etc. to slip into the water when the cover is removed...
I would not buy a cover.

That is correct, this is the cover for the pool 400x200x100cm.
Alternatively, there is the Solar Cover (which floats on the water).