UNDERWATER REMOVAL OF STAINS
Problem:
Localised staining of swimming pool tiles concentrated
near the outlet valves.
Possible Causes:
Corrosion present in the recirculation piping,
especially in the return line of the swimming pool support
system. Stains in the corroded piping could be forced
out when filtered water returns to the pool, thus staining
the tiles near the outlet valves.
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