I have major vinyl liner staining from the rust in my pool heaters cast iron headers and I have positive results from the vitamin C test and will be proceeding with...

I am a new pool owner and have been readong this forum for a couple months now. I have been going to the local pool store with my water and they also teach me a lot...

Our pool is 1 year old, and no matter what my husband does chemically, the stains (algae, dirt, rust) won't go away. I'm thinking it may be time to do it's first...

We have a salt pool and have green and black spots on bottom of pool. went to leslies pools had water tested they had us add 11lbs of alkalin up, 4lbs of conditioner....

I am required to keep our commercial pools at 3 to 5ppm chlorine. I don't think the Minnesota state pool inspector would accept anything lower. Also I have 3ppm iron in...

Hi Can you help I have a small salt water pool the problem I have is the P/H is very high colour purple the chlorine level is 2.5 but the water looks green with no algae...

I service many pools and am baffled by this one. One account has a purplish powery residue all over the walls and floor, and is now leaving stains on tile and grout. cya...

I have used stain free and metal free at least 5 times in the last 7 months and the stain keeps coming back, tan/brown and covers the whole pool. My pool is inground,...

I have a commercial spa that is inground gunite. It is starting to form black streaks around the wall of the spa. This is definately not Black Algea. My readings are as...

Hello all,

I've got a little problem I need some help with.

I have an in-ground, fiberglass pool that holds approximately 25,000 Gal. Until a couple of weeks ago...

Have some black stains at side of steps leading into pool. Some of them can come off with my nail or a stiff brush, but some of them are stubborn. Figured its Algae so...

My pool is clear tests ok for ph and chlorine but the grout is going brown ( not all over but in some areas) what can do and what is the cause please

my pool has black stains on the walls and all chem are fine could this be caused by electrolysis from not bonding the salt system?

my heater fires up but wont stay on

I found white stains on the bottom of my pool. Some of them have a sort of a buble on top (like water infiltrations underneath the liner)....

Where are these sopts...

I have an 18,000 gal in ground concrete pool. The pool water is dark green, and I can't see the bottom. I have balanced the PH, colorine is good. I've algecide, alge...

Hi I live in san diego and since we had all the fires here and my pool had about an inch of debris and ash in the bottom the water looks green. I did a complete clean up...

We have an enclosed tiled pool 28ft x 15ft which was completed one year ago and filled with rain water. Recently we have noticed yellow/light brown stains appearing in...

I have heard you can clean a stain on the bottom of a pebble sheen pool by using an acid solution delivered through a pipe to the stain. Has anyone ever tried this or...

15k marcite pool w/ stains secondary to fertilizer spill in pool. Any recommendations would be appreciated.

Scott