Clear 4 Weeks Shock Is A Once Off Treatment Pouch Ideal For Topping Up Your Chlorine Level As Needed. It Kills Bacteria & Algae, Contains Non Stablilised Chlorine That Will Not Cause Chlorine Lock. Fast Dissolving And Quick Acting Formula.
Unlike most controllers, you can vary not just the startup pressure (which is what most other units do), but also the ongoing, running pressure output.
The controller is also much smarter than most of the slightly cheaper ones- it doesn't just give up for 24 hours if it gets no flow,for example, as some others do. For an extra 10% or 20% on the price, it's well worth the money to get a
much smarter product, that's clearly had a lot of thought go into the software.
The instructions, translated from Italian, are not the clearest, though.
