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If it's mustard algae, hold the chlorine at 15 ppm for several days AND brush the pool thoroughly, to get rid of the algae. Mustard algae ranges from brown to yellow green, and is loosely attached to the pool walls. DEAD algae (or dirt from kids feet) can be tan dust that piles up and will blow away if you wave your hand near it in the water.
Thanks for the reply Ben! I didn't know dead algae could be tan in color, thought it was always clear-grayish color. Will see if the stuff blows away with the wave of a hand the next time I run across this. I shocked the pool up to 15ppm chlorine and held it there Saturday and Sunday (followed Watermom’s post (thanks Watermom) of 15ppm as I was still confused about the whole mustard algae, higher chlorine and the Best Guess Chart and not wanting to potentially bleach out my liner) and brushed several times each day. I passed the 1 ppm overnight drop test overnight Sunday/ Monday. I let the chlorine drift back down Monday since I passed the test and no one was home during the day to maintain a 15ppm chlorine level anyway. So far Monday after I got home and this morning I have not seen anything on the bottom of the pool.
While reading through the forums this weekend, I came across another possible explanation for the stuff.. pollen?? I have read several post about using filter socks to pick up finer particles in general.. not just pollen. I picked up a package this weekend and was amazed at what the sock is collecting that might of been falling out on the bottom along with the dirt you suggested.
Has anyone else had problems with automatic chlorinators causing circulation issues?? I have one I purchased this year before finding the BBB method =( and once I got my CYA up to my current level, I took out my chlorine tabs, but did not shut the valve. This weekend I decided to shut the valve completely, and appeared to notice better circulation within the pool after shutting the valve? Could this cause more to settle out onto the bottom of the pool as well??
Anyway all seems well at the moment. If the stuff comes back and it seems like it is more than dead algae, dirt, etc.. I will then have to figure out a way to keep chlorine levels up for several days as suggested.
Thanks again to all the moderators and participants of this great site!
TAB
Glad to hear things are improving and thanks for the update.
Yeah, lots:Quote:
Has anyone else had problems with automatic chlorinators causing circulation issues??
+ Hayward inline chlorinators restrict water flow a LOT, but closing the feed valve on the chlorinator wouldn't change that.
+ Depending on how it's been piped, all offline chlorinators can cause problems by feeding air from one side of the pump, to the pump intake. Resultant problems are quite common, and reduced flow could be an effect. If this were the case, closing the feed valve would improve the situation.