Why is there a black greasy-like crud collecting in the pool skimmer at the water line? It's easy to wipe out, but what is causing it and is there anything that can be...

my balance is good but my pool is still green i run my pump 24/7 i've been vaccuming everyday and brushing please help . itook my water sample to the pool store they are...

Help! I have a fibreglass inground pool that has a a white coating of what I assume to be calcium, caused by the hard water in this part of southern spain. I have...

Our white plastic parts in the pool, under the water are turning yellow.

The drain, the blower jets, the rim of the pool light and the skimmer basket outside cover that...

Any ideas for getting rid of yellow grout which builds up weekly, other than brushing it every week. pH & chlorine levels are fine and the water is crystal clear.

I need a little help here. I am planning on doing my first Acid wash to my pool. I have a 25000 gallon plaster pool.

How to I insert a hydrostatic plug? Do I even...

Does someone know if stains from a black olive tree on the bottom of a (concrete) pool floor will come out on their own with the action of the chlorine in the water or...

I am so frustrated with my pool. I have spent sooooo much money on chemicals and it still looks like a pond. Here is the latest: There are bubbles on top which turn to...

I have been having a very hard time this year with maintaining all chemicals added to water . I was recomened to lower my pool 2 ft and refill with fresh water then...

I have a pool that is 2 months old and just noticed some small (dime sized) rust colored stains in and around the bottom of the pool. I went in a used a light metal...

HELP my pool water is green all my level r fine even the pool store cant help... iv shock it, ran the pump 3 days with out turning it off, used banish witch coasts alot...

with low, very low ph I added ph+ and alk powder. Due to corrosion in my heater, the next morning there was a lot of turquoise copper throughout pool and large blackish...

We have a pool that we just purchased the home. In the pool there are black and green spots and many black streams all the way in the bottom of the pool. We used Black...

I have a 14'x28' inground pool with a vinyl liner. The liner is about 5 yrs. old. I have noticed a brown stain on the bottom of the liner that disappears when I add...

I have stain that appear in the deep end of my pool when the chlorine level is at the lower end of the safe range. The pool has a vinyl line and the local company that...

I have emptied my 10,000 gallon pool and the walls have blue staining on them. We have acid washed and brushed the inside and the blue stains along with other stains...

Okay, long story short. I was out of town for 8 days and sometime while I was gone my lights went out and noone was home to reset my salt water pump. I came home to...

Hello,

I am cleaning a pool which has green staining around the waterline, it's a plastic membrane lining. Everyday I clean it with a sponge and pool cleaner (like...

I have an above ground pool w/ a vinl liner. After backwashing my filter one day i resumed the fiter to normal operations. I went inside, came back out a few minutes...

Our fiberglass pool has purple stains on it...it happened once before and it was recommended that we not use the 6 in 1 shock system. We are only using chlorine, ph - up...