stain

I’ve loved my SWG over the past few years. Even with having to add salt and clean the cell every few months, it’s so much easier than dealing with buying, transporting, storing and deploying liquid chlorine constantly. But a recent salt-stain event had me questioning the SWG if there is iron...

Hi everyone, I’ve noticed recently this lightening or bleaching of the stone under the spillover from my spa to the pool. I run it everyday 10am-5pm. Not sure how long it’s been like this - I normally clean the pool earlier with a brighter sun level and didn’t notice. Any idea why? Pool...

Hi all. I've been battling what I assumed was an algae breakout in my pebblecrete pool. I noticed it properly Thursday night, but in honesty I feel like I have probably noticed it for longer. Effectively I assumed it was some form of algae outbreak as we've just come into summer in Australia...

Hey TFP, in new here even though I have been reading for months. Learned a lot and very thankful for the community! I recently purchased a home with a pool and decided to take care of the maintenance myself. There’s a black substance on the stairs of my gunite pool that I can’t seem to remove...

Hey all new pool here (about 60 days from plaster) and while I was having some repairs done I noticed a line of brown stains that are right in between the stair line tiles. The first two pictures are from last week when repairs were being performed. Red arrows are pointing to the stains. Pool...

New in-ground gunnite pool in Michigan in July 2022. Filled with pristine tanker water. Our pool guy closed it in mid-November, 2022 with a mesh cover. He opened it in late-June 2023, and the water was almost perfectly clear, but the walls were covered in rust-like stains. (See attached photos…)...

Hi all, We have a 1yr old 10,000 gallon SWG fiberglass pool. I am prettty anal with water chemistry, checking and balancing every other day or so using Taylor test kit, and going by the ranges and levels suggested here and in the pool math app. Chemistry has been stable. I drained my pool...

I have a used AGP with vinyl liner just installed a couple months ago. I installed the steps and for about a month, had a rubber pad underneath to protect the vinyl liner. However, that pad kept bunching up and was a source of algae and dirt, so I removed it. The steps have 4 rubber feet. I used...

Hello, My pool was built back in June, 22 by A&S. It came with the house we purchased. It is a gunite pool. I observed white stains a couple months back, and they are expanding. I have a high Ph problem due, not sure because it is a new pool or just swg. I am really note sure if these...

About a month ago, we noticed splotchy orange stains on our new pool’s lueder coping stone. The only thing I can think of that could have caused it was my husband often leaving pool cleaning tools (a long aluminum pole, nylon bristle brush, and net w/ plastic hoop) on the stones, and a tool...

this is my first time posting. We had a TON of algae when we opened our pool. After a few weeks of brushing, shocking, and getting everything functioning; this stuff won’t budge. We have been to our local pool supply dozens of times, socked, algecide, all of it. I recently found this forum and...

2-3 inches in diameter white circular spot at the bottom of the pool. When I felt it it was smooth and this spot/stain is just in that place, there are no other stains in the pool. Does anyone have any idea why there is that spot? Is this normal in a fiberglass pool? Recently moved so do not...

Hi all! First post here. So, we have a new plaster pool that I have been maintaining using the TFP method since about the middle of December 2022. Everything has gone fairly well so far. (Minus that I found out after the install was done that some of the equipment chosen by the PB was not the...

Hi there. So I have some what I can only assume are rust spots on the fibreglass pool steps (where the robotic vaccum doesn't get to). I brush these daily but had missed a few days. Scrubbing and cleaning do not touch them. I have tried the vitamin c tabs trick (15 in a sock crushed and then...

I resurfaced my pool about 2 years ago. These stain looking spots recently appeared in my pool. I tried Jack Magic’s and other stain removal chemical with no luck. The person at Pinch a Penny told me that this is pool mottling. Is this correct?

Hi all, I am a new pool owner and new to TFP. My pool was just finished and I have been maintaining it 2 weeks now. The pool is 20 x 30 ft, 18,000 gallons, all Jandy equipment, salt water, plaster, with marble tile and travertine coping. I have been noticing stains recently (see attached) and...

Need help identifying and removing this purple spot/stain. Is only around the edges of the pool. I have a saltwater pool with good readings. See last picture for results.

Our Pebble-Tec in-ground pool has four major stains that refuse to die. Two are definitely related to winter leaves, while two are mainly "where things died" (worms, etc.). They're brown to yellow-ish. There's no metal within a few feet of the stains. Overall pool chemistry is in spec. Ascorbic...

Hi all, I have some new stains on the floor of the deep end of my pebble-tec pool. I thought they were created just because I waited a couple minutes before sweeping away the baking soda I had added before adding calcium chloride. But reading through other threads, I wonder now if I added the...

Hello kind members, I have a white plaster pool that has developed black stains, mild blue stains, and a couple of yellow stains. After loads of reading, I'm thinking these are all metal stains and I'm planning on using the Jandy Stain Master to apply a modified no-drain acid wash to the entire...

Metal Staining is returning mid August, 3-4 months after the May AA treatment. I knew this would happen. I’m going to have to accept that an annual AA treatment is necessary. Here is why: Iron and other metals are found in gas and Diesel engine exhaust, as well as in road grit...

Our pool has had significant stains in the spillover spa since we purchased the home and accompanying pool 2 years ago. I paid very little attention to he spa, since we almost never use it. I assumed that it was mineral staining, but none of the stain testing made any change so I let it be. By...

Hello, I know this is technically not a pool questions but I stumbled across another thread on the website and the advice seemed really helpful. We recently bought our first house and are doing a small limestone patio in Houston, about 500 sq/ft. We're using a 1" thick buff lueders limestone...

I'm having a pool built in my back yard and I noticed what looks like a rebar stain on the side (see pics, below) Do you think this might cause a problem? The pool still needs decking and plaster. The builder started on this pool back in November of last year and is still at it on and off...

Our aqua blue Pebblesheen is 3 months old and I’ve been diligent with taking care of it. This morning I found a brown rust looking stain in our deep end. I did add some calcium chloride yesterday add my CH level had dropped with the rain we’ve had. Could that have caused it? It won’t brush out...

I recently bought a house with a pool (first time pool owner). The edge of the pool seems to have staining that won't come up. I have tried brushing and and scrubbing it. It is only discolored on the ledge (The flat part around the pool where you can stand up no matter the depth). Does anyone...

Since getting the house, I have had a large stain in the bottom of my gunite pool. It is large and kind of cloud shaped and dark brown. The stain has not changed size or color over the years except where I have attempted to treat said stain. Previous owners did not do a good job of maintaining...

Is rusted rebar a problem before gunnite is sprayed?? I hired a pool builder who dug a hole in my yard and installed rebar. The builder collected the draw from my bank and never returned. The rebar and dig have been exposed to the winter weather for 3 months now... dig collapsing and rebar...

Hi, It’s been awhile since I’ve been on here. I’m coming out from a huge Algae In my pool. I have finally got it cleaned up from that (I hope) and the water looks fair - is not crystal clear. I just tested and I have CC 2, FC 8.5, TOtal C 10.5, Alk 70, CH 125 and CYA 40. Is it just gonna take...

Hello all, We're getting quotes for tile/coping work to fix some issues on an older (late 80's maybe) Anthony and Sylvan plaster pool. While doing that, we're trying to make the rest of it as perfect as possible. We have some staining and then some off-color mottling all over. Three questions...