Recent content by stephp25

No, we haven’t been in the pool for at least 10 days so I don’t think that is it. It is not really greasy. It is more sandy. It almost looks like sprinkled Oregano (but is more black than green).

Sorry but I have another question. Yesterday and today, there was black sand-like substance floating in the skimmer. It almost looks like a spice floating on the surface in the skimmer. When I stick my hand in, it gets on my hand. I don’t see it on the water surface in the pool itself. Any idea...

Also I am sure that the readings were accurate. I managed a commercial pool for years so I am very familiar with doing pool readings. I often did it twice to make sure it was accurate.

Do you mean to drain the Whole pool? That would be very expensive. What could be in the water and is there a way to test for those things?

Now today, the algae is worse than before we did the SLAM. Any suggestions?

I don’t understand how this is possible because we have done everything by the book. We finished the mustard algae shock last night and even made sure that the level was still at 18 in the evening because that’s when we first started it the. Ishtar before and figured that it would benefit from...

We have only done about 14 hours of the mustard algae shock after the slam so I assume we should finish that 24 hours and then let it drop to our target range. Correct? I just don’t want to stop too soon (if it was algae his morning) and have to start over again because it has been...

We decided to wait another day after meeting the criteria to end the Slam before raising the chlorine to the mustard algae level for 24 hours because we felt that we would have more time today to check the level more frequently and add chlorine.. So we increased the chlorine up to 18 last night...

That’s a good reminder about adjusting the FC as the CYA changes. We actually have had the issue with the TA and pH being too high which is strange given that the tabs are acidic. I will keep an eye on it. I will always have the liquid chlorine on hand if I need to raise the level but just would...

i have been reading up on the reasons for your recommendation of using liquid chlorine instead of chlorine tabs. We have been using the tabs in an inline feeder. We had a pool leak and were adding water daily, so we have never had an issue with the CYA rising. We have fixed our pool leak so I...

Ok, I guess 5.0 is our new chlorine level after SLAM.

Thanks for the clarification. So after the two weeks, we can go back to maintaining it at the minimum chlorine level of 2.5 (rounding up from 2.2)?

Just so I am sure that I understand correctly....... if my CYA level is 30, I should maintain the pool at 4.5 for two weeks after we do the 24 hours of the high level slam for mustard algae? If so, is it okay for kids to be in the pool when it is 4.5ppm?

I don’t see that in the article. How high should I maintain it and is that level safe for children to swim in?

So, start it now or at night? Does it matter?