slam

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...

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...

Hello everyone, I just purchased a new home. It has a 17,000 gallon indoor, inground, geothermal heated pool. It’s 14 years old, original vinyl liner and all original pool equipment. It wasn’t used much by the previous owners, but was maintained by the local pool company who built it when new...

I'm 100% sure I have mustard algae in the pool. I can clear it out, but it comes right back within a day or two. I know I need to SLAM the pool, and I read the article about treating the algae, but I had some other questions. 1. Once I get the pool up to the MA/SLAM shock level and clear it...

I just finished my 6th day of SLAM'ing my pool and wanted to make sure I am on the right track and not missing something. Was on vacation and came home on Wed, July 26th to a green pool. Talking to neighbors who used it, it wasn't like that 24-48 hours prior. At no point have I seen algae...

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...

Hey TFP, I’m a new to this pool ownership gig, and super grateful for the level headed bunch of folks that maintain this site and are active in the forums. Love it! I have an inground plaster pool/spa combo, with shared filtration and heating. My builder has been pretty rough to deal with, and...

Hello. We did a long SLAM when we opened this year. Took a long time. We were good for a while but I’m not sure what happened because the chlorine started disappearing again. I started another SLAM earlier this week hoping but also knowing it wouldn’t be done by Sunday. We are going on vacation...

Hey, been lurking for quite awhile. I'm familiar with the method. I've used it with success In the past, but now not so much. Here are my test results FC 2 TA 200 PH 7.0 CYA 30 CH 40 I let the FC back down to take these tests. I've been keeping it at about 12 FC per pool math. I can tend to...

Ok, so I have been as diligent as possible in testing and balancing my water since my pool was finished a couple of months ago. I test every morning and have kept everything in line as much as possible. In mid-june I did a very small slam due to not passing an OCLT, once I was passing though I...

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...

Happy to be here! We are on our 2nd year with our above ground pool (18' x30' doughboy brand). Had good success last year just using chlorine to maintain nice clear water (historical evidence in my profile picture haha), but we didn't winterize properly and then had our winter cover get damaged...

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...

*EDITED* Greetings, Need some encouragement/help...keep shocking or SLAM? My kids are going to make me walk the plank soon... Note on pictures: Pictures are chronological; Picture 3 is at dark dusk; Lots of seedling/leaf debris that gets cleared 2X day 3X vac to waste 2X cartridge rinse...

I literally can't tell what my CYA is because it looks different in every light. I have complained about it in here before but this time my question is related to slamming: So when testing CYA, the little dot starts to disappear around 60 and in most settings I can still kind of make out the...

5/28 UPDATE WE PASSED OCLT!!!! WOOHOO!!! Thank you so so much for the responses!! One last question: If we see algae start to come back, can I go to MA level? Or do we need to repeat SLAM first? For the love of all that is holy I hope all you knowledgeable humans can help this newbie figure...

Getting my pool ready for summer after 40 inches of winter rain. TA, pH, and CH dialed back in very quickly using PoolMath. I took the CYA to around 60 before re-reading in the SLAM instructions to keep it low. I will raise it a bit more when done with SLAM. How long should I expect to...

My question is, is a CYA of 90 too high to perform an effective SLAM for mustard algae? According to the tables in TFP, the FC for SLAM is 35 and it is 51 for the Mustard Algae SLAM. Is it even possible to obtain a FC level that high without bringing in truck loads of liquid chlorine...

Hi all. Hoping for some clarity (of my water too!) I recently completed a SLAM with no OCLT and crystal clear water. After only a week or so, FC was staying above 7 and then started to go cloudy again. Also noticed white crusty flakes in the pool. Quite a lot. I had a look on the SWG plates and...

In conducting my SLAM, it passed the Overnight FC Loss test, the water is clear, but the CC is 3.0. What to do?

I am writing this as a record of my steps in dealing with a situation I'm sure many of my neighbors in Texas are dealing with. In central Texas, the pecan trees are occasionally infested with aphids in late summer. The aphids will suck sap from the underside of the leaves. The sap is under so...

Hello! This is my first post here ever! So.... My out-of-ground 15,000 gallon pool has been greenish and cloudy for two weeks. TWO /HOT/ WEEKS! I used a bunch of pool store :poop: on the pool to no avail. So, I found this place (thankfully). Here's where I am right now: I flocked the pool...

Had recently finished successfully SLAMing my pool. Being that our summer days are limited, want to be able to let the kids back in the pool sooner versus later. After a couple days of days, the pool’s FC is still in the high teens. My question is- When you are done SLAMing and per instructions...

Hello TFP members! This is my third summer of pool ownership and our first SLAM procedure. Carelessly let the FC drop lower than needed for a few days and shortly after started noticing what seems to be mustard algae blooms. Performed a "half-way" SLAM with lower FC levels thinking I could get...

Hi, everyone. I’m dealing with a small outbreak of algae. This is my first experience with it, so I have a couple of questions. We accidentally left the chlorine generator off on our SWG and, with weather too cool to swim, I didn’t pay much attention to the pool. That was a mistake...

Hello! This is our 3rd summer with a 30k gallon vinyl (?) in-ground pool of unknown age in the middle of KS surrounded by cottonwood trees. We had switched it to a SWG our first summer and replaced the sand in the sand filter with ruby sand two summers ago. Other than a few small hiccups, we’d...

I began SLAM process 5 days ago to address what appears to be mustard algae, but now I wonder if I have misidentified what I have, and have the additional complication of having slacked in frequency of chlorine upkeep due to emergency work time demands since Wednesday. My logs are shared so all...

We are new to pools as ours was finished about a month ago. We are leaving for 6 days so I am wondering what to do. Note that our SWG is not turned on yet so it’s a regular chlorine pool for now. I know I should SLAM before I leave but what else? PH is at 7.8 but rises quick since pool is new...

So at about my breaking point with this pool so I decided to post for some help from the experts. Pool was closed by local pool store and for the first time - when I opened this year it was the greenest I've ever seen. (1st photo) I'm wondering what caused this in the first place as I had...

I replaced 1/2 of the water in the pool (lowered CYA to 50) and I want to SLAM it. I balanced the ph & alk 1 hr ago (soda ash) , wondering how long do I have to wait before adding the liquid chlorine to slam FC level?