We have a 15,000 gallon pool and jacuzzi. When I was cleaning the jacuzzi with a wire brush I noticed groups of dark black or dark blue little rocks that are connected...

When we talk about Saturation Index, does a total hardness mean anything, or are we just concerned about Calcium?

I've recently aquired a pretty basic tds meter and it got me wondering. The instuctions for many of these things say that they are for testing at a specific temperature,...

I am considering adding a Intermatic chlorine generator to my in ground pool. I had the pool resurfaced several years ago, and I am told that the contractors probably...

we use well water for our home and pool. the water for our home goes through some filters a softener and a uv setup. do we need to use a pool water softener too?

i will...

I have an ongoing problem with rapidly rising calcium hardness, and I have been refilling my pool every year. I never add chemicals that contain calcium. Our tap water...

I have just drained my 55m2 inground tile pool here in Spain. The tiles and surfaces are full of scale. Our water is hard and we have high ph problems in our area.

How...

My Pool has been dealing with High PH for some time now which could be the cause, but I do not test for water Hardness nor TDS.

The scale/layer of this build up...

I have teal, chalky deposits all over the tile grout of an older spa. I have drained it and tried brushing, but nothing short of a putty knife removes it. Is there a...

We purchased a new saltwater pool this year and it's been great, but I noticed big spots have appeared all over the bottom. What is it? What can we do about it.

Hi, First timer here. I have an empty indoor salt water filtration pool at a business I want to fill. I just purchased this and the pool has been empty since June 1st of...

We just purchased a home with a pool in terrible shape....couldn't see 6 inches. We drained it and acid washed it (had it done by a not completely competant pool guy)....

Is there any other way to lower salt level in pool other than pumping down and adding fresh water.

Hi, I was just wondering what it is or what it means when you see white or clear beeds or tiny bubbles all over you when your in the pool water.

Thanks, Michelle

How much of MgSO4 (in grams)/470,000,000 mL = 100ppm

I'm trying to increase my Pool water hardness by adding magnesium sulfate I'm not sure If I have to add 140...

I just took off the cover on my above ground pool and was totally shocked at what I saw. The water was black and after dumping in a couple pounds of shock treatment...it...

I have a heavy build up of scale in the bottom of my pool due to the water being way out of balane for over a year. Besides getting my water balanced what can I do to...

causes of a cloudy pool

We just installed a salt regenerator pool late last summer---our first pool ever. Now it is time to "open" the pool for the summer. I never received an...

I live in columbia, SC and work for a local pool company. We have recently come in contact with some kind of pink calcium buildup on one of our plaster pools. I took a...