How do you remove calcium buildup from your gunite pool?

Answer 1

Adding to the answer below....Once the calcium is removed from the rock, you can actually add sodium tetraborate pentahydrate to your pool and it actually binds up the calcium in the water so the tile line of calcium buildup does not occur. This does not remove it, only prevents it after removal. Sodium tetraborate pentahydrate is a natural mineral that comes in powder form. The brand that I am fimiliar with is Endure. It also makes the water 'softer' and water looks great.

Removing Calcium from Rock Cement

Good advice here ... The stain or pigmentation in the concrete will indeed be affected.

Removing Calcium from Rock CementTo remove the calcium build-up on artificial rock you are almost guaranteed to remove the stain as well, leaving a grey line instead of a white line. You will usually have to remove all stain and start fresh to get a uniform look.

Yes. Companies specialize in calcium removal. They can use the latest technology for cleaning hard water deposits from pool and spa tiles, coping, brick and rocks.

Answer 2

I had a look around to find what I felt was the best answer to This question and I found it in Wikianswers. These are the answers I like However if you go to the link below there are a lot of other sugestions.

FYI This is what I do for a living. I do not use glass beads, sand or chemicals. Rather I use high pressure water to blast Magnesium Sulfate aka Epsom Salts as the cleaning media. Yes it is a special patented formula, but it has fabolous results. From my perspective one of the superior advantages is that Magnesium Sulfate (non-toxic, pH neutral, water soluble) is lighter in mineral hardness than tile, grout, brick, rock or PebbleTec and CANNOT damage the surface. Whereas glass beads and sand can damage the glaze and tile. Please do not consider chemicals, bad, bad, bad. My technology is rather new, but I have over 200 pools and not one complaint to my credit. www.cleanpooltiles.com

A pressure washer works great. It blasts the calcium deposits right off.

Answer 3

If the mineral deposit is very light you may try vinegar and a scrubbing pad. Failing that, you might need to try a stronger acid. I use Biodex 300 (caution it is very strong) If the buildup is more than just a film you might use a pumice stone (be sure to follow instructions to avoid scratching). For even worse situations you will probably need a professional. In the past they would blast the tile with glass beads or crushed glass. A newer (abt 5yrs) method uses mineral salts to blast the deposit off. The salts are softer than the tile surface therefore don't cause damage, and are safe in the pool.

Answer 4

Firstly lower the PH that's why you have cal. Do this by adding liquid muriatic acid, run the filter for 12 hours. The cal should have softened a bit, now all you have to do is scrub and vacuum. Keep a check on your PH levels or it will happen again.

Answer 5

I use the plastic back of a my stainless steel wall brush. It is easier to do it in the water with a mask on as you can see clearly what you are doing. You can also use a stain remover stone and scrub with that.

Also ensure you add CALSTOP every 6 months and keep the total alkalinity around 180.

Answer 6

Proper water chemistry and a fair amount of work. pH levels at 7.4 ppm

Answer 7

Have the pool drained and acid washed.