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hi, my pool is not green anymore and I have the metal stain under control. See my post "green water"
but Now we have a cloudy deep end. You can see the drain but its not clear as a bell.Probably dead algae?
here are my numbers
FC 7.2
CC .4
Ph 7.7
Alk 70
cya 80
should I add bleach or use the calcium hypochlorite powder shock again? or something else?
Test your water at night for chlorine, and again in the morning before the sun hits the pool. If you lose more than 1 ppm of chlorine, or if your CC is above 1.0, then you need to shock the pool and hold it until you're not losing chlorine at night. If you haven't lost more than 1 ppm of chlorine overnight, then it's probably just the dead algae that needs to be filtered out.
Do you have a working pressure gauge on your filter? Is the pressure rising as you run the pump? I've looked at the Pool chart, but don't see your info, unless I missed it--if you haven't already, can you take a few seconds and fill this out for us so we can give you better suggestions?
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But, if you shock, the stains may come back. It is a vicious cycle. But, if you have overnight chlorine loss then you have something in your water that is brewing and you have to kill it. That is why once you get your metal/stain issues dealt with, it is critical that you always keep your chlorine in range for your CYA level (based on the Best Guess Chlorine Chart in my signature) so that algae can't get started.
If you do have algae brewing, you will have to kill it and then deal with the metals and stain issues again.
this morning my my FC is 6.6 and CC 0
The filter is on 24/7 , it is still slightly cloudy but water looks blue
I can brush brown particles off the walls and bottom, dead algae or metal , not sure?
how much more bleach to add?
What was your chlorine loss overnight?
For reference, in your pool, each gallon (4 quarts) of 6% bleach will add about 3.2ppm of chlorine. Use that to help you determine doses of bleach to add. With a CYA of 80, you need to keep your chlorine between 5-10ppm ALL the time unless you are fighting something in the water. Then, your shock level will be 20ppm and in a pool with metals in the water, you really want to avoid shocking the pool if you can.
'it only decreased . 6 overnight but I just took another reading and it's down to 4.4 after a very hot 94 degree sunny day so I will add 2 gallons of bleach
after adiding more bleach, I'm convinced im in a vicious metal cycle, I added ascorbic acid to see if it helps and it did, my chlorine is down to 1.6 so is it safe to put in polyquot 60 and Metalfree now?
You are going to lose chlorine continually until all of the ascorbic acid is used up.. This is probably not algae if you have used algecide and started to use chlorine as soon as you did...you do not want to shock for at least 2 weeks after the stain treatment or you will be in a " metals cycle". Your water can get cloudy from the ascorbic acid precipitating calcium out if the water- this will clear up with the filter running 24/7. You just need some patience. You can swim in it if you are holding any chlorine. It takes a lot of choline to eat up the ascorbic acid especially if you had to add a lot to get rid of stains. Keep your ph no higher than 7.2, and if you see stain start to come back add more sequestering agent. Remember when you add anything to your pool you will use up extra chlorine. Poly quart and sequestering agent use up chlorine...I know it seems like you will never get stain free and balanced at the same time but you wll! If you have any other questions feel free to ask!
thanks, I haven't put any algacide in yet this season,I have only shocked with bleach, and used ascorbic acid , i was going to put sequestering agent and polyquot 60 today, water looks tinted/stained but bluish and cloudy in deep end.
Is that a good idea?
Did you put in any sequestering agent after the ascorbic acid? THe ascorbic acid only lifts the stain from the pool surface. You need sequestering agent to keep the lifted stain (metals) in soluble form - sequestered in solution which keeps them from redepositing on the pool surface. You never get rid of the metals - we are trying to see if there is an easy way, but so far we have no sure way. So what you are aiming for is to keep the metals from falling out of solution on the surface of the pool. High chlorine along with high ph levels will cause any metals in your water to fall out of solution, therefore they will deposit on the surface of whatever it can. Please read the sticky Pooldoc has posted at the top of this forum. Let me know if there is anything you don't understand. You should have put the algaecide in the water before you started the stain treatment. After you let the ascorbic acid recirculate in the pool for at least a 1/2 hour, and you see that all of the stains are gone, then you should have added enough sequestering agent as the bottle suggests for the amount of water in your pool. Until you have done that, the stain will just come back. Once all of the stain is gone and the sequestering agent is in, then you can start to bring up ph and then add chlorine in to get it to the bottom end of the best guess chart, and continue that process until your chlorine starts to hold in the pool, which means all of the ascorbic acid is removed. If you see stains start to come back you drop the ph back to 7.0 - 7,2 and add more sequestering agent. If you don't follow these steps you will be in a vicious cycle of stain battles.