You can use mild muriatic acid to remove clacium build up on tiles.
i am not to sure about the calcium part of this, but i know that Bromine is just like clorine, you can buy the product you are looking for at a different pool store because maybe it is just your pool store that isn't selling it
To raise calcium in your pool use calcium chloride. You premix it in a container to let it dissolve and add 6lb for 10pmm in a 50,000g pool.
Stop using Calcium Chloride as your chlorination and start using tablets. Keep your pH level at 7.2 and brush the calcium deposits occasionally. There are calcium removers that you can buy at your pool supply store that will reduce the calcium in the water as well. Hatawa
No, baking soda does not increase calcium hardness in a pool. It is used to raise alkalinity and help stabilize pH levels in pool water. To increase calcium hardness, you would need to use calcium chloride.
If the calcium is a result of pool chemicals, draining some or all of the pool water will lower the calcium hardness level. If the cause is the fill water, commercial hardness reducers or chelating agents will bond with the calcium to keep it trapped in solution.
Low Calcium Hardness in pool water means that there is low calcium in the water and is considered "soft" and soft water tends to be corrosive. It will etch away and your plaster and any metal object the pool water touches.
Any time you like calcium is harmless
To add calcium chloride to a vinyl pool, first determine the amount needed based on your pool size and current calcium levels. Dissolve the calcium chloride in a bucket of water before slowly pouring it around the perimeter of the pool while the pump is running to ensure proper distribution. Monitor the calcium levels regularly to avoid over-dosing.
Calcium chloride increases the hardness of water. Proper hardness is critical to balancing the water in a pool. Proper hardness is especially important in a plaster pool to prevent leaching of the plaster finish, which results in a rough surface. Calcium chloride can be purchased at home improvement stores at significant savings over pool supply outlets.
Go to the pool dealer and purchase a calcium hardness test kit.
Turn the pool upside-down and knock on the bottom.
The best way to lower calcium hardness in the pool water is to drain the water and refill with water of lower calcium hardness. Have the calcium hardness tested for both the pool water and fill water. Ideal range is 175-300ppm. There are 'calcium reducer' products available through pool stores, but not sure how effective or economical they are.