I don't quite understand the math for PPM calculations or how much I need and how much to buy. I don't see in the pool math app how to calculate either.
Should I brush and vacuum first before I start this process? Also I have a spa do I test that separately? Any other tips are greatly appreciated. After that I'll start with testing again then lowering the pH with Muriatic acid and then start the SLAM process.
I don't use the app on the phone, so I cant help you with how that one works. I use the original Pool Math. Here is a link.
Discover the calculator behind the perfect pool, PoolMath. Dealing with pools has allowed TFP to become the original authors of the best calculator on the net.
www.troublefreepool.com
1. At the top, enter your pool size (gallons).
2. then in the NOW column, enter your current test results.
3. In the TARGET column, enter what level you want it to be,
4. then click the CALCULATE button at the top and it tells you much of each chemical you need to add in order to reach your target
I pasted an example below.
Further down towards the bottom of the app, is a pool size calculator.
And also a "Effects of Adding" which can be useful for various reasons
As for brushing and vacuuming.
Add your Chlorine first. After you've added the chlorine, go ahead and brush the walls and as much of the bottom that you can.
I would not worry about vacuuming until you start to see a lot of dead algae on the bottom.
When the algae has been killed, it turns brown and looks like dirt on the bottom of the pool.
Keep your pump running 100% of the time until the SLAM is complete. If your filter pressure rises to 20 above your "Clean Filter" pressure, then you'll probably need to clean it.
If by chance you have a Multi port Valve on your filter, you can set that to "Recirculate" to start the slam, and especially if you have a DE Filter. Setting the valve to recirculate and help you keep filter cleaning to a minimum. Once your water starts to turn opaque, or slightly blue again, then go ahead and vacuum and then set your multi port valve back to "Filter".
Brush the walls and bottom at least once a day, every day, until your water is crystal clear an the slam is complete.
