1st SLAM…NEED HELP

KatheMac65

Member
Jul 13, 2024
5
Central Florida
Pool Size
15600
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite Pro (T-15)
I’m fairly new to the site and trying to understand chemistry and SWG. Despite having the Hayward Pro Logic system for 4 years, I have had no idea how to use it. I hired a pool tech for private “pool school”, and all my questions about controlling the SWG were answered with “Don’t touch anything…Just leave it like it is and you should be fine.” So, everything has been guess work. However, my system took a lightning hit and everything went blank. Therefore, I had to gain a better understanding, just to figure out where to go next. I sent display and main board to a guy in Quebec and he can fix just about anything. However, he said the boards were damaged in multiple places and he thought that the system had taken a direct hit of lightning. So, I ended up getting the Omni Logic upgrade. Because of the amount of time without any mechanism to sanitize, my pool was completely green, bordering on brown, along with 10,000 tadpoles that I spent many hours fishing out. I’ve been reading everything, but can’t seem to figure out the correct amounts to add. I shocked last night with 2.5 gallons of liquid chlorine and (2) 1 pound packages of dry hypochlorite, as well as 64 oz. of Algaecide, per the label. Based on readings, I had added 1.5 cups of Muriatic acid and 5 pounds of baking soda. I brushed the entire pool. Lots of particles I keep skimming out. Color is much better today, but I don’t know where to go from here. The chlorine has run its course, so there is zero chlorine. My brand new testing kit that I purchased 2+ years ago did not have CYA, so I purchased a tube and reagent by Taylor that arrived just this afternoon. As expected, my CYA level is zero as well. PH is 7.2 and alkalinity is 50. I tried to use the pool math app, and I can see the target levels, but have no idea how much chlorine and CYA to add to get there. The SWG has not been set up in the computer. The installation guy will come back to address once I finish the SLAM.
So, my question is…how much chlorine do I add to get to 3, and how much stabilizer do I add to get to 30 (and that’s a BIG “IF” I’m interpreting this data correctly). I have a 15,500 gallon finite pool.
Can anyone help me…I’m feeling extraordinarily (cognitively) challenged that I can’t seem to figure out the basics. My first pool had an in-line chlorine feeder, my second pool had a DE Filtration system, and this 3rd pool has a SWG and Hayward 1.85 HP variable speed pump. I have 4 relays that also control all my mechanical components to my Koi Pond (skimmer, waterfall, bio filter, fountain, lights, UV sanitizing system, and water removal pump…that’s 4 separate motors…my electrical pole has 8 outlets, just for the pond…all running through the Omni relays).
Anyway, can anyone advise?
 
IMG_1374.pngIMG_1375.pngIn poolmath be sure you have setup your pool info (volume)
for fc you set your “current” to zero
& then for the “target” tap on the dot next to slam & it will show 10ppm
You must input your cya (0)
You must pick the sanitizer type you’re using (liquid chlorine should be used for slam) & the % you have & the recommended amount will populate at the bottom
 
Looks like you need 4# of stabilizer/granular cya to get to 30ppm as recommended in the
SLAM Process article.
Add about 2# at a time to a sock 🧦 and hang it infront of a running return (not touching the pool wall) squeeze the sock as it gets squishy to dissolve the cya.

IMG_1376.jpeg
 
Poolmath is simply a calculator- all the current & target numbers are changeable.
Once you have the cya going your slam fc target will increase to 12 ppm.
IMG_1377.jpeg

Stick with liquid chlorine for the slam. Cal hypo can cause cloudiness in large doses further complicating things.
Also, no more algaecide. Its a preventative at best- its way too late for that. Some algaecides also contain things like ammonia or copper that cause more problems. If you have more return it & buy liquid chlorine.

Here’s some pics of the sock method for the cya
IMG_1378.jpeg
IMG_1379.jpeg
 
  • Like
Reactions: Bperry
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.