Citric acid
Instead of branded descaler
~$12 for two pounds against ~$8 a bottle
Most descalers are a dilute acid, usually this one, with colour and scent added.
Limescale is calcium carbonate, and calcium carbonate dissolves in acid. Citric is the acid most descaling products are built on, and buying the powder means mixing the strength you need rather than paying freight on water. A kettle, a showerhead and the washing machine all take the same treatment.
It etches calcium carbonate, which is what limescale is and also what marble, travertine and limestone are. Keep it off stone and off any polished finish you care about.
What to get
- Citric acidFood grade powder, two pound bagAmazon ~$12
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