Not Starting Off Too Good.....Really Need Some Help!
(Oxbow, SK, Canada)
I have a Pro Series Rectangular above ground pool, 18' L x 9' W, 52" height. Water level is 45.5" and holds 4,480 gallons of water.
I just bought the pool, and we set it up yesterday. It took 22 hours to fill, and just finished filling at 5:30pm tonight. With only concentrated algaecide that I was instructed to pour in while filling the pool, the water was a very dark green color. I did not test the water (I guess I should have). I purchased a Hydroforce Aquarius Chemical kit, and followed the directions.
Once the pool was filled, I was instructed to add 320g of Platinum Shock and let it sit for one hour. After that hour, I was then to add 17 tablets of Stabalized chlorine. It is now almost 12 hours later, and the water seems to be getting even darker (I was able to see a rung or two in the ladder beneath the water, however, now it is hard to see any of the rungs).
And, it appears that there are a kazillion tiny little bubbles everywhere. Against the walls, on the ladder, on the floor of the pool. I did some testing, and here is what I have:
Free Chlorine: 10
Cyanuric Acid: 75
Might be important to note that the temperature in the pool is 17 degrees. I purchased the pool from Canadian Tire, and they sent me to their website, however, not very informative at all.
It indicates that I need to purchase an Aquarius PH Reducer. Any feedback is so greatly appreciated.
Thanks for the question Lanette
There are many things going on here. All of your readings are very high. I'm not sure if it's because the fill water is so off or something else was done to the pool.
First we'll start with the CYA. Stop using the chlorine tabs immediately, they're raising the CYA too high. Normal range is between 30 - 50ppm. Unfortunately there's no chemical or "easy way" to reduce the CYA. You need to do a 1/2 drain and refill with clean water. This will get the CYA to around 37ppm. The CYA needs to be 7.5% of the chlorine to be effective. If it's too high (above 70 - 80ppm) or too low (below 20ppm) the chlorine will be rendered ineffective. If you run the chlorine at 2.5ppm, then the CYA is 7.5% of that, or 33ppm. 2.5 divided by 7.5% = 33.
As the CYA rises the chlorine level must rise in order for the relationship to be met. You can have CYA of 70 or 80ppm and keep the chlorine at 2.5. It won't work. For every 10ppm of chlorine added with Trichlor tabs you'll raise the CYA by 6ppm.
Without knowing the fill water chemical readings it's going to be a little difficult to determine the course of action to take. Everything else will be diluted as well and the new numbers you get after retesting the new fill might not be the numbers I have.
I gather from the question all that was done was a new fill and an algaecide. Let's say that everything else is still high.
You need to get the total alkalinity (TA) and pH down. This is done with muriatic acid. You don't need any special or expensive pH or TA down, just simple acid.
Reduce the TA first. It's 0.8qrts. of acid per 5,000 gallons of water to reduce TA 10ppm. You need the TA to come down 140ppm so this will require some extra acid, a little over 1 gallon.
Start with 1 qrt. of acid in one spot (small circular motion) with the pump OFF.
Gently sweep the bottom to break up any hot spots. Let sit for 3 - 4 hours, then pump back ON to FILTER for 8 - 10 hours, retest, and make another adjustment. Test the pH as well as the acid might affect lowering the pH.
The pH is at 12 which is much too high. It needs to be 7.4 - 7.8. This is 0.6oz. of acid to reduce pH 0.2 per 5,000 gallons of water. You're going to need about 16oz. of acid broadcast around the perimeter of the pool with the pump on FILTER and retest after 8 hours. Obviously if the pH comes down after adjusting the TA then leave it alone.
Swimming Pool pH Levels
The hardness is very high as well. It should be between 150 - 250ppm. Nothing but a refill with clean water can reduce the hardness.
You need to shock the pool. Don't buy any Super Shock or Burnout Shock, just simple liquid chlorine will do the job. Don't use chlorine granules. It's calcium hypochlorite and has a pH of 12. You'll undo everything you just did in regards to lowering the pH.
It's 1 3/4 qrts. of liquid chlorine (almost 1 gallon) per 5,000 gallons of water to reach 10ppm. I'd use 1 gallon. It's better to go a little over 10ppm than not hit the mark.
Shocking is a process, not an event. The trick is to get AND keep the chlorine above 10 - 12ppm for a period of time. You'll need to manually dose the pool with chlorine to keep it at 10 - 12ppm. Make the adjustment at night, then retest in the morning. Be sure to have the pump running 24/7 and backwash once per day. You can go up to 15ppm, but no higher. Anything after that and you're wasting money and chemicals.
You'll know this is working because the pool will go from green to a white/gray cloudy and the chlorine will begin to hold better. First you may lose most, then 2/3, then 1/2, and so on. Once you only lose 1 - 2ppm of chlorine 8 - 10 hours after the last application you know the algae is dead. Now it's just a matter of filtering and backwashing once per day.
Swimming Pool Chlorine
Pool Chlorine Tablets
To recap, the first thing is to do a 1/2 drain and refill to get the CYA down to around 35ppm, then adjust the TA and pH, and shock the pool.
You can use a PolyQuat 60 algaecide while shocking the pool to reduce the chance of another algae bloom. Once the pool is right, use good pool chemistry and you won't need to use an algaecide. Only use a PolyQuat 60 as other less expensive and cheaper ones have copper and metal fillers in them. Here's a good post about that:
Sticky Pool Algaecide On Vinyl Liner
You don't need phosphate removers or clarifiers. Here's a post on that. It's long but worth the read:
High Phosphates Over 1000 & Cloudy Water
I know there's alot here and you have some work ahead of you, but have patience and be consistent and persistent. Your pool will clear up.
To post a reply, or if you have a similar question, you can see your post on the Q&A page in the "Shocking A Pool" category.
Check back to this post for updates or answers.
If you need immediate assistance (within 24 hrs) or for emergency personal assistance, you can make a donation of your choice and I'll answer your questions by phone.
Hope this helps and have a great Summer.