1kg Tub ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3

If you are looking at aluminium sulphate and wondering whether this smaller bag is enough for a specific job, yes. The 250g size is useful when you do not want to buy far more than you need. It is easy to store, clearly labelled, and practical for jobs where iron free alum is the right material. With products like this, I mostly want the correct chemical, a sensible quantity and packaging that does not make storage awkward. My tip would be to check the use case carefully, follow the relevant guidance for your job, and store it safely away from children and pets. Straightforward, useful and five stars.

I’m doing as suggested ,a litre of rain water to half a teaspoon of aluminium sulphate, once every three weeks. My pinkish Hydrangea is now a Bluey pink. I appreciate that this isn’t a quick process, but I’m pleased with the progress made so far.

Just the job Many thanks

Great product good quality

Done what I needed it to. Lower soil pH. The only thing is there is no instructions so his trial an error.

I bought this to turn my potted pink Hydrangea blue, despite adding vinegar to help break down the product, the hydrangea is still pink. So a waste of money for me but maybe i did something wrong?

Good product have enough to last me a lifetime

Very easy to use keeps my hydrangea blue