500ml Relax Spa and Hot Tub Flush
This highly concentrated system cleaner will have the internals of your hot tub like new in no time!
Unlike many cheaper brands this needs just 250ml to treat an average 1000lt spa!
Effectively removes Biofilm and harmful deposits from internal pipework, jets and pumps.
We recommend that you apply a system flush at each water change. Contains Sulphuric Acid. Handle with care!