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always dose chemicals according to the directions on the bottle. in the case of algaecide they will usually give you the number of oz needed per 10,000 gal for a treatment dose (meaning you already have algae) and number of oz per 10,000 gal for a maintenence dose (meaning you dont have algae but want to proactively prevent its growth)
however chlorine is the best algaecide. shocking a pool with liquid chlorine when the pool has algae works very well. also completely brush the pool and clean skimmers and all other parts of the pool below the water line.
in addition if algae is present test and balance all chemicals. also if you chlorinate with chlorine tabs or di-chlor or any type of stabilized chlorine or if you have added chlorine stabilizer (cyanuric acid) be sure to theck your stabilizer/cyanuric acid level. 30-50 ppm is an ideal stabilizer level. as chlorine stabilizer/cyanuric acid levels rise (especially exceeding 100ppm) it decreases the effectiveness of the chlorine in the water. you will still be able to test for chlorine and get a good result it is just that the high stabilizer level is not allowing the chlorine to do its job. the only way to remove cyanuric acid/stabilizer is partially drain pool and refill with fresh water.
high phosphate levels can also promote algae growth
there are many causes for algae. a good place to start is to check your water chemistry especially your free chlorine and total chlorine and make sure free chlorine is high enough and that you dont have a combined chlorine.
checking water chemistry may shed light on another issue and you can resolve it and save your money by not needing to buy the algaecide. algaecide alone will not usually solve your algae issues. usually there is some other issue causing the algae in the first place.
consulting a pool professional is a good idea. most pool retail stores will test your water chemistry for you for free if you bring in a water sample.
to add to the above, it is important to balance Free chlorine, pH, Alkalinity, calcium hardness and stabilizer. in addition to keeping stabilizer around 50, pH must be under 8.0 (7.4 to 7.6 is ideal). when pH exceeds 8.0 or stabilzer is high, chlorine does not work properly.
Do not believe anyone who wants to sell you expensive "specialty chemicals". Specialty chemicals are very expensive and are not ever the best answer to pool water problems. Just properly maintain these basic items (and your filter system) and you will have sparkling clear blue water.
I strongly suggest buying a Taylor pool test kit #K2005. read there booklet inside and you will know more about pool chemistry than most "professionals" you ever meet combined. This kit will educate you on how to perfectly balance your pool water.
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∙ 11y ago
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How long until it is safe to swim in a 20000 gallon pool that has 1 gallon of algaecide in it when it only was to get 12 point 8 oz of it according to the directions?
It will take from days to weeks to have that much algaecide displaced. You should not use the pool during that time. NEXT TIME READ THE INSTRUCTIONS ON THE PRODUCTS THAT YOU USE BEFORE YOU USE IT. I would also watch out for any side effects from the copious amounts of algaecide used.
Is a 1.5hp pump good for a 20000 gallon pool?
I have a 28,000 gallon pool and my pump is 1hp. Works fine.
How much sodium hypochlorite will a 20000 gallon outdoor pool consume?
about 1 gallon at a dose rate of 5 parts per million, dah
What is the chemical used to remove minerals from well water added to a new vinyl pool?
You can use Metal Free from Natural Chemistry32oz. for a 20000 gallon pool.
What do I do I put 10 times the dose Algaecide in my pool pool?
I suggest you contact the manufacturer of the algaecide and find out from them what would be the bes coarse of action.
How do you get the green out of your pool?
By killing the green algae with an algaecide available at your pool shop.
Is algaecide added to slat water pool when filter is on?
Adding algaecide to the pool when the filter is on should not do any harm in fact it should mix it into the water more quickly
How much chlorine do I add to kill algae?
Chlorinate it to the max or shock the pool An get some algaecide into it as wel as well.
What are the side effects of too much algaecide in a pool on humans?
One of the side effects of having too much algaecide in a swimming pool includes the likelihood of nose and eye irritations after prolonged swimming. Dry skin is also common after someone has been swimming the whole day and did not lotion up.
Would algaecide cause milky water in your pool?
my pool did get milky but cleared up after 48 hours
What do you do if pool has high chlorine with algae?
Use an algaecide and test for phosphates.
How soon after you put algaecide in the pool can you get in it?
You want to have the equipment running while adding any chemicals. You will want to wait about an hour after adding algaecide.
