Citric Acid 1kg - 100% Pure Food Grade Fine Crystals

Works great descaling. Way better than off the shelf products

Great product and value. Useful if you do your research. Lots of uses.

Used before - good stuff

Great for descaling loo pan. Pour about 1litre of warm (not boiling) water into loo, then add half a cup of crystals. Wait a few hours before flushing loo. Works much better than all the silly descaling sprays whose manufacturers spend so much on non recyclable containers and advertising. Despite negative packaging reviews the plastic bag used is very strong and minimalist. I cut the front third of a 2 litre used milk bottle leaving handle, to store bag.

Great! Works amazing if you don't want to keep buying dipdabs (just follow a recipe to make sherbet with this and icing sugar)

I’ve purchased this multiple times for my DIY CO2 setup for my fish tanks, and it has always worked perfectly. The quality is consistent, and it does exactly what I need it to do. It arrives well-packaged every time, and the price is very reasonable—especially considering how long it lasts. With normal use, one pack easily lasts me a few months. Overall, a great value product and ideal for anyone running a DIY CO2 system!

I bought this for getting stubborn limescale stains off toilet bowls after reading a hack - it works brilliantly, just put a scoop in overnight and it's sparkling in the morning

Great stuff, can even use it to de- rust bolts,