New to this group. We have a 24,000 in-ground vinyl pool with sand filter. Pretty sure we have mustard algae and we're following the slam/mustard slam directions from this site. After the first slam our FC hit 45 which is good per the chart. Checked at 2 hrs and down to FC of 6 so we added more 12.5% shock. Back up to 40. We left our auto cover open. Should we keep it closed during the day to lessen Chlorine loss from sun? We have been keeping our cover closed and we were worried this caused the algae growth. Our CYA is 55.
Treating mustard algae
- Thread starter ravadahills
- Start date
- Jun 22, 2014
- 52,024
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
Welcome to TFP! 
Let's make sure you are doing the process correctly.
First, you need to maintain and complete the regular SLAM Process. With a CYA of 60, your FC should be "24" per the FC/CYA Levels. Only after you pass all 3 SLAM criteria do you continue to the MA process, and that is only for 24 hrs.
For the MA treatment, you increase the FC to MA levels only for 24 hrs. I'll put the MA link below. Give it a read. It's got a lot of good info. Be sure to pass the regular SLAMM criteria first though. If you have any questions let us know.
www.troublefreepool.com
Also see Pool Care Basics
Let's make sure you are doing the process correctly.First, you need to maintain and complete the regular SLAM Process. With a CYA of 60, your FC should be "24" per the FC/CYA Levels. Only after you pass all 3 SLAM criteria do you continue to the MA process, and that is only for 24 hrs.
For the MA treatment, you increase the FC to MA levels only for 24 hrs. I'll put the MA link below. Give it a read. It's got a lot of good info. Be sure to pass the regular SLAMM criteria first though. If you have any questions let us know.
Mustard Algae
Today We are going to show you how you can get rid of mustard algae in your pool. By following the steps in this guide and with no expensive chemicals.
www.troublefreepool.com
Also see Pool Care Basics
Ok - I think we're on track doing the right process.Welcome to TFP!
First, you need to maintain and complete the regular SLAM Process. With a CYA of 60, your FC should be "24" per the FC/CYA Levels. Only after you pass all 3 SLAM criteria do you continue to the MA process, and that is only for 24 hrs.
For the MA treatment, you increase the FC to MA levels only for 24 hrs. I'll put the MA link below. Give it a read. It's got a lot of good info. Be sure to pass the regular SLAMM criteria first though. If you have any questions let us know.
Mustard Algae
Today We are going to show you how you can get rid of mustard algae in your pool. By following the steps in this guide and with no expensive chemicals.
Also see Pool Care Basics
JupiterFL
Silver Supporter
- Mar 28, 2023
- 128
- Pool Size
- 12638
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Not if you are still raising your FC to 40. You only do that for 24 hours after you pass all 3
Overnight Chlorine Loss Test critera. Your slam level for FC is 24 until you pass OCLT then you raise it up for 24 hours.