Water turned green after shock

There is no way the undiluted is higher than 100 and diluted is 30. That's too big of a testing error.

Try again, both tests. Stand outdoors, sun at your back. Hold the tube and your waist and GLANCE at the dot. In the glance, you might see some black at the right point, but you can't make out a dot. Glance, no staring!

You can pour it back and fourth from the mixing to the test tube and try the test multiple times. The sample will be good at least 5 minutes.

Take a picture of the tube from the top, outdoors in the shade of your body. Diluted and undiluted, line before it disappears and at line where it disappears. 4 pictures.
 
Can I still use the chlorine pucks and shockwave I purchased?
Shockwave is 68% calcium chloride. It is also a very powerful oxidizer and will turn water with iron green. It is still good for adding chlorine, especially if there is an algae bloom (which there shouldn't be if following the chemical recommendations here). It will also kill algae that may be sitting on a step/seat/bottom as it dissolves relatively slowly and will actually get to the surface. Great for black algae (which isn't really an algae).
 
@mknauss @Rancho Cost-a-Lotta I don't get how he is getting over 100 on CYA test but 30 on diluted. I'm missing something. See last post on 1st page for what he is doing.
There is a testing error. If the straight test shows high CYA, I would use that. More chance of error when doing the diluted test.
 
  • Like
Reactions: Rancho Cost-a-Lotta

Enjoying this content?

Support TFP with a donation.

Give Support
Hope this will help someone with a similar pool setup. I used the vacuum hose and the vacuum to drain the pool with the pool pump. As you can see in the pictures it is maintaining pressure and flow. With the pool pump it will take 82 minutes to drain 2/3. I put the garden hoses in just in case the end was leaky, so it would not go dry, but it is not leaking.
 

Attachments

  • IMG_0149.JPG
    IMG_0149.JPG
    328.1 KB · Views: 7
  • IMG_0148.JPG
    IMG_0148.JPG
    280.1 KB · Views: 7
  • IMG_0147.JPG
    IMG_0147.JPG
    246.2 KB · Views: 7
  • IMG_0146.JPG
    IMG_0146.JPG
    246.4 KB · Views: 7
  • Like
Reactions: PoolStored
Pool is back up and running. Here are the test results.
DateFCpHTACHCYATemp
2024-06-05 3:44:21 PM17.240902067

Saturation Index is .18

Let me know if this is correct. I used the pool math calculator.
Add 233 oz Calcium Chloride - Is this what you use in winter to melt snow?
25oz Dry Stabilized - What do I use for this? The pucks I purchased?
15oz 20 Mule Borax
53 oz Baking soda
31 oz Liquid Chlorine - I have the liquid chlorine.
 
Last edited:
You vinyl pool does not need a lot of calcium.

What is a Heat Siphon heater?

Don't kick your pH and TA with Borax and Baking Soda. Just check it every few days. If it is stable or goes up you are good.

Add 15 ounces of dry stabilizer to get your CYA 30-40 using the sock method

Add about 40 oz of liquid chlorine.
 
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.