by David Rollo on 13/09/2019
by Sonya Stevens on 19/12/2018
by Stephen Bellamy on 26/10/2018Have worked well in the past. Does keep the chemical balance right for about 1 1/2 to 2 weeks whilst not being used / away.
by Karl Quirk on 04/08/2018
by peter leonard on 13/07/2018
by Trevor Routley on 04/05/2019Delivered as promised