On 29 Nov, 13:37, "Vortex5"
wrote:

Question:

Are the cheaper inhibitors such as those sold by BES any cop? *Are they good
value, or a false economy?

david

Subsidiary and related question: does anyone know what these
inhibitors are chemically? I've sometimes wondered whether I can buy
the active chemical itself direct from somewhere, not account of
having a 650 litre system, but on account of being tightfisted.