Chlorine not registering

Causes and cures for cloudy swimming pool water.
Milky pool water, white, pink, brown, purple, black cloudy water.
James Watson

Chlorine not registering

Postby James Watson » Mon 13 Sep, 2010 23:09

Ok, I understand that it is a lot to learn. Here is a simplified program to help you from getting too far behind until you have a chance to catch up.

1) Test at least once per day.
2) Subtract the chlorine reading from 5 and add that many quarts to the pool.

Chlorine reading..........quarts of bleach to add
0...............................................5
1...............................................4
2...............................................3
3...............................................2
4...............................................1
5...............................................0

Allow the feeder to run out. Run the pump 24/7 until your water is clear. After that, you can reduce the run time if you want.

You can use tabs in moderation as long as your cyanuric acid is less than 60 ppm. Once your cyanuric acid hits 60 ppm, you should not use any more trichlor. If you do use trichlor, you should raise your Total Alkalinity by at least 20 ppm. At this point, I recommend that you not use more than one or two 3-inch tabs per week.

I recommend that you use bleach as your primary source of chlorine from now on.

When you get a chance, clean your cartridge filter. You should get a spare cartridge so that you can do a quick swap and then clean the dirty cartridge when you get time.

Here is a page of demo videos that shows how to do the chemistry tests. Go to the bottom and choose the video of the test you want to see demonstrated.
http://www.taylortechnologies.com/produ ... ber=K-2006


shhurs
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My Pool: 16 x 32 above ground, Kayak, vinyl liner, Haywood pump, cartridge filter
Location: St Louis MO

Chlorine not registering

Postby shhurs » Wed 15 Sep, 2010 16:02

Well by Taylor kit finally arrived. Was using a Walmart OTO test. I think I'll get better at this as we go but here are my readings:
CYA 80
Total Alk 100
pH 7.1 (low)
Calcium hardness 100
chlorine .5

I did add 3 quarts of bleach today (6%) and Chlorine still low. However, my pool is sparkling clear again. Also, in attempt to raise pH without chemicals I aerated for about 5 hours today. Still low so I guess I'll need to add product to raise it.
Weather is cooling off, so I may close the pool by month end.

Thanks much
chem geek
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Chlorine not registering

Postby chem geek » Wed 15 Sep, 2010 18:27

You can use 20 Mule Team Borax to raise the pH with only half as much rise in TA compared to using a pH Up product (or Arm & Hammer Super Washing Soda which is the same thing). You can use The Pool Calculator to calculate dosages.
James Watson

Chlorine not registering

Postby James Watson » Wed 15 Sep, 2010 22:51

You're doing well. With your cyanuric acid at 80 ppm, you should stop using trichlor tabs. To raise your pH, I recommend that you add 4 pounds of baking soda (regular baking soda from the supermarket) or 2 pounds of Borax (from the laundry aisle in the supermarket or general store). Dissolve 1 pound in 3 gallons of water and pour the solution into the pool.

You should maintain a free chlorine level of 5 to 6 ppm at all times.

Did you have any CCs (Combined Chlorine)?
shhurs
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Posts: 31
Joined: Tue 07 Sep, 2010 09:50
My Pool: 16 x 32 above ground, Kayak, vinyl liner, Haywood pump, cartridge filter
Location: St Louis MO

Chlorine not registering

Postby shhurs » Thu 16 Sep, 2010 19:50

still having trouble getting chlorine reading, free and/or combined. Turned off feeder, added bleach. Pool water is sparkling clear. Brushed it tonight and added more bleach.

Am I going to have to go through the drill of 1 gallon per hour again.
James Watson

Chlorine not registering

Postby James Watson » Thu 16 Sep, 2010 20:18

You shouldn't turn off the feeder until all of the tabs are dissolved and the feeder is empty.

Add enough bleach at the end of the day to raise your level to 15 ppm and let us know what level you get the following day.

Are you using the FAS-DPD?
shhurs
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Posts: 31
Joined: Tue 07 Sep, 2010 09:50
My Pool: 16 x 32 above ground, Kayak, vinyl liner, Haywood pump, cartridge filter
Location: St Louis MO

Chlorine not registering

Postby shhurs » Fri 17 Sep, 2010 10:43

so with a zero chlorine reading now that means 467 oz of 6% bleach or almost 4 gallons to get to 15 ppm - that's alot.

yes, I am using the FAS-DPD
shhurs
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Joined: Tue 07 Sep, 2010 09:50
My Pool: 16 x 32 above ground, Kayak, vinyl liner, Haywood pump, cartridge filter
Location: St Louis MO

Chlorine not registering

Postby shhurs » Fri 17 Sep, 2010 15:27

Also turned my feeder back on; not too many tablets remaining. Mine uses 1" tablets.

Pool looks good.
James Watson

Chlorine not registering

Postby James Watson » Fri 17 Sep, 2010 20:06

Using your reported volume of 13,500 gallons, I get 420 ounces of 6 % bleach to go from zero to 15 ppm.

Add enough bleach to get to 10 ppm at the end of the day. Wait 1 hour and retest the FC and CC. Then test the FC and CC again in the morning. If the level is less than 10 ppm in the morning, add enough bleach to get back to 10 ppm. Retest again at the end of the day.

Do this for three days. Take good notes and report back what the results are. Allow your system to run continuously until we get the results.

Until all of the tabs are cleared from the feeder, we are not going to know for sure what is happening. Therefore, you will need to do this for a few days beyond the time that the feeder clears.

I know that 10 to 15 ppm seems high for your chlorine. However, the cyanuric acid dramatically slows the chlorine down, and 15 ppm of FC with a cyanuric acid of 80 is actually equivalent to less than 1 ppm of FC with no cyanuric acid.

You should clean you filter when you get a chance. Trapped debris can create a chlorine demand.

Have you added anything to raise the pH?
shhurs
Pool Care Proficient
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Joined: Tue 07 Sep, 2010 09:50
My Pool: 16 x 32 above ground, Kayak, vinyl liner, Haywood pump, cartridge filter
Location: St Louis MO

Chlorine not registering

Postby shhurs » Fri 17 Sep, 2010 20:32

I cleaned the filter today even though it looked good before. I added the bleach and turned the feeder back on - not much left in there; uses 1 inch tablets.

I didn't see your message before I added the bleach for today so added 467 ozs. I added soda ash earlier in the week and have aerated for 2 days. pH still low, at 7.1

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