Review on CLR CL 4Pro Calcium Remover Gallon by Josue Wallsmith

Tried everything: shorten the chain, change the filling valve (twice) and check the water pressure. Finally called the Toto specialists who recommended the CLR. First, turn off the tap on the wall and flush. Empty the bowl as much as possible (not necessarily completely empty). Use the WHOLE GALLON: Pour 1/2 into the overflow pipe (inside the tank). Pour the other 1/2 into the bowl. As instructed by Toto, leave on for 24 hours. Deposits of calcium and minerals dissolved in huge chunks. Washed out after 24 hours. Toto went from a disappointing 7 second flush to a 1 second power flush. Hooray! CLR removed 99% of scale/mineral deposits. Toto works like new.