Why stainless steel?
The annual cleaning is most easily done. Just empty the
pool, remove all foliage, apply acid to clean it from lime,
soot and other grime, then fill it up again. The refined
steel-pool has no grooves, the water distribution system as
well as the raw water return system are easy to open, there
are no hidden corners etc. A stainless steel basin is always
a neat solution.