algae

I have been having these small black spots appear and it has been impossible to scrub them out, even with a stainless steel scrubber. Can anyone help with guidance of what to do? Thanks!

Hello! I am new to owning and this is my first time opening one up. I attached some pics of how it looks today after double shocking it yesterday evening around 8pm. I left my pool on circulate since I have a sand filter and didn’t want algae getting stuck in there. I’m not sure if that was the...

We bought a house pool in February. We did not know what condition the water was in since it was closed and winterized (we are in the midwest.) And we are first time pool owners who do not know much. When we took the cover off two weeks ago found a pretty bad algea bloom. We went to the pool...

Hi, I opened our pool for the season 3-days ago to already find a green pool with 50 degree water temperature. I have been SLAMing for 3-days with little to no improvement. I know I made a mistake initially vacuuming and assuming my sand filter would trap the algae. As soon as I realized...

33' round above ground pool. Sand filter. Third season with the pool. Last year I switched to liquid chlorine and chlorine pucks through an autofeeder from baquacil. Long story short - didn't understand what CYA was and how it was being added by the pucks. CYA was over 130 last year and I...

Hello! Brand new here :) Like many other newbs, I let my pool go over the winter (sorry). I am currently on week two of my SLAM and the water is looking soooo much better; however, now that I can see better I have discovered that many of the walls are stained…. I am on well water, but I...

My in laws pool is pretty green and has a lot of debris at bottom. Should I drain it or can I get it blue without draining. We live in DFW area Allen TX. So not sure if I have to worry about it popping out. It's a concrete/plaster pool.

Hi Pool Gurus, I am in year 3 of pool ownership. I have learned so much from this forum and I thank all of you for making me a more confident and knowledgable pool owner. I have learned how to maintain, open and close my pool from all of you generous individuals. Many thanks. Last season when...

I live in south FL so we get a lot of sun and heat of course. I have had the SWG for a couple months and have a real hard time keeping the chlorine level balanced. I have yellow algae now and its spreading, the FC just wont go up or kill it. My CYA is 70 so I think I am good there. Question...

Hi guys, I'm new to the forum and pool caring. Have the pool for a couple months and was taking care of it with dichlor only. And it was crystal clear. But my pH was around 7 - 7.2 and last week I added sodium carbonate to raise the pH. The same night I shocked the pool. The next day the...

hi I am wondering what this is.. is it black algae. Doesn’t come off easily at all.. I use the steel brush and changes slight colour from black to greenish… used the puck and brush and puck and brush.. and no change. Currently slamming the pool as it’s gone cloudy. Went cloudy as fc dropped...

Pool is a year old we maintain it ourselves and realized our basket is turning pink, I believe it is some kind of mold or algae, I haven’t check the filter yet, the pool itself doesn’t look to have a pink hue to it, although it is hard to tell. What do we do? 10,000 gallon pool.

New pool owner here with a stain or algae problem. The pool is salt water, 7200 gallons and less than a year old. Several neighbors recommend TFP and I have been bingeing on it for two days. My pool service doesn’t know what is is and wants to drain the pool and acid wash it. I don’t think...

This is the first season I've been responsible for my pool maintenance and I could not have done it without the help of this forum and site so thank you! I've been able to keep all my levels practically perfect and my pool has been sparkling all season (thank you liquid bleach!)...that is until...

Hey guys, if you take good care of your pool. Meaning the filter is optimal, the chemicals are balanced.... then should you see yellow build-up if you miss brushing for just one day? I know this probably isn't exact science, and most likely everybody is YMMV. If I miss brushing for just one day...

I typically only use a solar cover after Labor Day and until I close the pool (about 4 weeks on average). It mostly helps keep the gas bill down. I don't deal with significant leaf drop, but I do have a neighbor whose maple leaves inevitably get blown onto the cover and start to breakdown. I...

If I leave the water undisturbed for 24 hours it is perfectly clear. Upon any movement in the water, a “cloud” appears. When I look into the water after starting to vacuum on waste, I can see millions of tiny particles that appear white in the water. I have vacuumed on waste several times and...

Hi guys! I’ve had algae growth in my pool for several months and no amount of scrubbing, backwashing, algicide, chlorine, etc seems to help. Really breaking my head over this and would love some fresh ideas or input. I live in a tropical climate (around 30C/85F most days, water same...

I honestly don’t know what to say other than I’m at my wits end. I’ve maintained a followed trouble free pool and the advice and knowledge for over 6 years with a 24’ above ground pool with zero issues. The last 30 days or so have been heck. I am unable to get the green out of the pool using...

This was my first full summer thorough a tremendously hot Florida season with great success thanks to TFP. I recently added a couple of chairs to the tanning ledge / Baja shelf. It's obvious immediately that the return flow is deflected by the chairs - but it still circulates (as indicated by...

My Pool man said this is not black algae, but discoloration that occurs in old pebble tech finishes. Another pool man urges that is it black algae and can ruin my finish. My pool man is treating it in case it is black algae but it doesn’t seem to be getting better! What the heck do I do please?

I have a pool that was originally built with an in-floor cleaning system - it doesn't really work. I bought a pool vac that I use and like, but I have to run it through the skimmer which means that all of the surface debris goes straight to the pump strainer. I've been looking at...

Hi, A couple of years ago, TFP had articles promoting the use of borax to control algae. The content appears to be gone? What changed on this topic?

I've read through the SLAM method here and started it yesterday. Sounds great, added 4 lbs of CYA (level was zero before addition). Pool is 18,000 gallons, in ground, vinyl, sand filter 300 pounds, new pump is running 24/7. TC is 2, FC is 3 but should be increasing soon. I've been using...

Hello! This is our third summer with our above ground pool, we bought the house with the pool so had to learn as we went. We have a DE filter but this summer we have really been struggling. At first we thought it was a bad pollen issue, bottom Of the pool was always green. When I would take the...

Hi, we need help. We opened the pool and we had a hole in our cover, the pool was disgusting. We got all the debris we could see and shocked it. It turned blue but very cloudy. After a week or so it would green again . We used the green to blue shock treatment. It just seemed to bring algae to...

Good morning! Pool: 13,500 Fiberglass Chlorine pool with Hayward Chlorine Generator (more on this later) Specs from pool store test: FC: 6.5 TC: 6.5 CYA: 84 (more on this later) PH: 7.7 TA: 106 CH: 193 Phosphate: 0 TDS: 1,000 -We were dealing with what I thought was Mustard Algae early in the...

I SLAMed my pool in mid April after re-balancing pool chemistry after winter rains. Turned salt generator off, OCLT quickly stabilized, I let CL drift back to normal, and thought I was good. It's now mid-June and algae is back. Why is that? Not bad, but I see algae when I sweep the walls and...

Hi there. This is my 3rd summer with our plaster pool. 32700 gal. I didn't do as well keeping up with the pool year 2 as I did year 1 so I hired a pool guy over the winter. Now he is proving to be unreliable and I have to switch. In the meantime, the salt cell needs cleaned and the pool...

Our pool was in desperate need of a drain and clean. The CYA levels were beyond deluding, and we hadn't replaced our water in 7 years (thanks, California drought). Not to mention the algae was out of control and the pool became a breeding ground for mosquitos. My husband didn't want to pay a...