Inhibitors etc

[Southview]

Ive recently moved a radiator and in doing so drained the system, I am looking at topping up the system with an inhibitor, Ive looked on screwfix and there are two options the sentinel at £9.99 and protex at £3.59 what is the difference ? apart from price is the dearer one the better option ? also Ive noticed other products for heating systems De Scaler & Cleanser should I buy these at the same time and put them into my heating system when I add the inhibitor.

Thanks Southview
Thought for the day..........
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[jonesey]

I find the cheaper chemicals for heating are useless. If you want to clean your system get a bottle of setinel x400 sludge remover, instructions are on the bottle. After emptying x400 out of your system get setinel x100 and follow the instructios on the bottle, they are very clear even if you know basic diy.