If most who report on this section of the forum are (assumedly) chlorine users, why so many algae issues?

Whenever I see a post that someone suddenly has an algae problem after rain it doesn't make any sense. I've never had that issue..ever. their fc levels were barely adequate to begin with, most likely.

If anything, I've been fighting high FC due to more than usual cooler, overcast days. My FC on Saturday was 12 ppm. The next few days are going to be over 90F and sunny. It should come down. I did lower my SWG to 25% from 30%. I'll check tomorrow to see if the FC falls too fast.
 
If you look you rarely see pool stores pushing SWG. Would put them out of business :)
And if they just sold liquid chlorine wouldn’t make a lot of money. They benefit from that $35 can of yellow out :)
Businesses for profit - it is always about pushing the higher margin products to sell. Also new products are not always better for the consumer but may be marketed because they have lower cost to the business corresponding in higher margins.
 
I really enjoyed the just add more shock (CYA) to the already high CYA merry-go-round advice I got from the pool store.
Tell me about it! The advice given me was to add more chlorine (and probably shock...don't remember anymore). It got to be ridiculous. First a pool water test told me to add like 20 lbs of chlorine, and then when the problem continued (not being able to hold a FC level) subsequent water tests called for more and more. A friend of mine (who still uses the same store for even opening and closing his pool) ran into the same problem I did and so we both switched to baqua at the same time. He has managed better than I due to having a sand filter, which allegedly works better with Baquacil. He has hardly ever run into white water mold or slime issues. Said he saw some evidence of it last season but otherwise not an issue. I've battled that stuff for a long time until starting to use Line Clean last season. Not a trace of it anymore. I'm frankly amazed.
 
It is not just the rain. Many big storms causes debris to be put in pool so a combination of rain water, debris and as you stated, minimum FC levels is a recipe for algae. If you are not adjusting your SWCG output or adding LC directly after then that could trigger a bloom.
I have seen big 5' spots of yellow after a rain in several areas of my pool. Mainly during the spring but the term clean to green over night is real if your FC isn't ready to battle :)
 
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Actually, I have found rains, even heavy ones, don't affect the FC levels all that much. If anything, my SWG is set to provide enough chlorine for the hottest, sunniest summer days. When it is overcast or raining, my SWG is producing more chlorine than is needed and my FC inches up over those days.
I find that it raises my FC. The lack of UV on those days and my FC goes up.
 
We’ve had heavy rain here and there. Nothing happened to my pool. Now I haven’t checked my chlorine since last week sometime and it has dropped to 2.5ppm. And .5 cc. This is the first time all year I’ve had chloromide that registered. So I dumped a gallon of 5.25% and half gallon of 10% in. It finally got hot around here, rain and what I suspect is the little no see ums ate my chlorine. They C are back with a vengeance.
 
Rain? What’s that? Moving here to Las Vegas from California, I moved from one drought stricken area right to another. Except here with the low humidity, evaporation takes a heavy toll.
 
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It is not just the rain. Many big storms causes debris to be put in pool so a combination of rain water, debris and as you stated, minimum FC levels is a recipe for algae. If you are not adjusting your SWCG output or adding LC directly after then that could trigger a bloom.
I'm talking about regular rain a few inches.
Not a flooding event that would ruin any pools chemistry.
 
Not a flooding event that would ruin any pools chemistry
Even a 6 inch whopper would only reduce FC by 10%-12% with all of us having an average depth of 48 inches for above grounds and 60 for inground. *IF* the pool was properly treated and well mixed. The two go hand in hand. :)
 

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