CPF Solutions Hot Tub System Flush 500ml, Spa Flush Cleaner - breaks down and removes biofilm build up, dirt, oils, unpleasant smells from your internal hot tub pipes.

My hot tub water was getting a little dirty and it was time for a change of water.I followed the instructions and got a little panicky when it started to foam but it worked a treat! After the 2 cycles of the jets on I emptied hosed down and cleaned off the residue and refilled and the water is Crysta clear. Only used half the bottle so there is enough for next clean.