Pour baking soda.
Calcium buildup in toilet tank.
The short term way to treat calcium buildup in toilet pipes is to physically remove visible calcium buildup and scrub it away.
But for more difficult stains we recommend the following steps.
Things needed plunger spray bottle distilled white vinegar toilet brush with stiff nylon bristles baking soda rubber gloves pumice stone.
Another option that many diy experts swear by is plumber s cloth.
If not drain the tank once more as you did in step 1 again then repeat steps 3 through 6 again when happy with how sparkling clean your toilet tank is turn the valve back on fill it and then.
It will immediately begin to foam up as it interacts with the calcium squirt some on the rubber flapper to instantly dissolve.
Depending on the severity of the stain the liquid might have to be reapplied and scrubbed vigorously several times with sandpaper or a rag.
The age of your toilet and how frequently you clean it can help determine how best to treat the calcium buildup.
This situation arose after the toilet assembly was changed out.
Let that sit for at least 30 minutes.
Lactic acid acetic acid gluconic acid formic acid hydrochloric acid boric acid.
A mild natural acid such as lemon juice or vinegar can be very effective at nipping calcium deposits in the bud.
You want to make sure that all the calcium stains are not under water.
Spray the calcium stains liberally with distilled vinegar.
Then start squirting the the works toilet bowl cleaner in the tank.
Gluconic acid citric acid lactic acid glycolic acid sulfamic acid.
The toilet probably had calcium buildup before but it never caused a leak.