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It is currently May 22nd, 2013, 6:27 am
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GreatCanadian
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Post subject: Dark specks in one corner of pool  Posted: August 10th, 2012, 7:28 pm |
| Registered User |
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Joined: July 28th, 2011, 7:42 am
Posts: 404
Location: St. John's, Newfoundland
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Could these possibly be algae? My numbers are:
FC=5
CC=0
TA=70
pH =7.5
CYA=50
FC has never fallen below 3. These specks are confined to one corner of the pool. They are black or a very dark brown and very difficult to pick off with a fingernail. They do not feel the least bit slimy at all. Could it be algae? I cannot guard my pool any closer than what I have been. How could algae have possibly formed, if it is indeed algae.
Edit to add: Cannot be brushed off with the bristles on a Catfish pool vac.
GC
_________________
13'x22'x52" 8,000 gallon ProSeries Pool with Borates
Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
Bestway SWG
AquaPro Pro500 50,000 BTU heat pump
TF-100 Test Kit
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linen
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Post subject: Re: Dark specks in one corner of pool Posted: August 10th, 2012, 11:36 pm |
| Mod Squad |
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Joined: July 30th, 2010, 8:56 am
Posts: 5582
Location: Minnesota
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It doesn't sound like algae to me. If it was black algae, my understanding is your can scrap the "head" off and they are usually green on the inside.
Could you post a pic?
_________________
I am a Pool School attendee and I use my TF100 test kit and the Pool Calculator to properly maintain my: Round 11K gallon AGP with a deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels, Intex SWCG (copper bars disconnected). Also a Rubadub hot tub (chlorine) and a UDS (Ugly Drum Smoker) poolside.
Here at tfp, shocking is a process, not a product. Your are not finished with the Shocking Process until:
1. CC is less than 0.5 ppm, 2. An OCLT shows a loss of 1.0 ppm or less and, 3. The water is crystal clear.
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GreatCanadian
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Post subject: Re: Dark specks in one corner of pool Posted: August 11th, 2012, 5:12 am |
| Registered User |
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Joined: July 28th, 2011, 7:42 am
Posts: 404
Location: St. John's, Newfoundland
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Yes, if the weather gets a bit nicer later today I will get in and take an underwater shot. The specks are so small I doubt they'd show in a pic unless I am right on top of them.
_________________
13'x22'x52" 8,000 gallon ProSeries Pool with Borates
Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
Bestway SWG
AquaPro Pro500 50,000 BTU heat pump
TF-100 Test Kit
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GreatCanadian
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Post subject: Re: Dark specks in one corner of pool Posted: August 13th, 2012, 4:09 pm |
| Registered User |
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Joined: July 28th, 2011, 7:42 am
Posts: 404
Location: St. John's, Newfoundland
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Finally got a chance to get in the pool today and snap a few pics. I also tried to brush them off again with a stiff bristle brush. Just a few spots came off. The rest could not be brushed off:    Any thoughts? These specks appear nowhere else in the pool, only this corner.
_________________
13'x22'x52" 8,000 gallon ProSeries Pool with Borates
Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
Bestway SWG
AquaPro Pro500 50,000 BTU heat pump
TF-100 Test Kit
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central nj
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Post subject: Re: Dark specks in one corner of pool Posted: August 14th, 2012, 6:38 am |
Joined: May 21st, 2012, 4:25 pm
Posts: 16
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I have something similar, just went to shock level. Hope someone can give a definite answer.
Steve
_________________
16,000 gallon, inground. Diamond bright finish. Hayward 1.5 hp superpump, quad 80 DE filter, Jandy legacy gas heater
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GreatCanadian
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Post subject: Re: Dark specks in one corner of pool Posted: August 14th, 2012, 7:30 am |
| Registered User |
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Joined: July 28th, 2011, 7:42 am
Posts: 404
Location: St. John's, Newfoundland
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Can you brush yours off? Or scrape them off easily with your fingernail?
_________________
13'x22'x52" 8,000 gallon ProSeries Pool with Borates
Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
Bestway SWG
AquaPro Pro500 50,000 BTU heat pump
TF-100 Test Kit
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central nj
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Post subject: Re: Dark specks in one corner of pool Posted: August 14th, 2012, 4:30 pm |
Joined: May 21st, 2012, 4:25 pm
Posts: 16
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GreatCanadian, Absolutely not. I'll let you know if the shock gets it off.
Steve
_________________
16,000 gallon, inground. Diamond bright finish. Hayward 1.5 hp superpump, quad 80 DE filter, Jandy legacy gas heater
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GreatCanadian
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Post subject: Re: Dark specks in one corner of pool Posted: August 14th, 2012, 5:23 pm |
| Registered User |
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Joined: July 28th, 2011, 7:42 am
Posts: 404
Location: St. John's, Newfoundland
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Thanks. I would appreciate you letting me know. Tested water again just a few minutes ago. All levels are good.
_________________
13'x22'x52" 8,000 gallon ProSeries Pool with Borates
Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
Bestway SWG
AquaPro Pro500 50,000 BTU heat pump
TF-100 Test Kit
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GreatCanadian
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Post subject: Re: Dark specks in one corner of pool Posted: August 21st, 2012, 1:12 pm |
| Registered User |
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Joined: July 28th, 2011, 7:42 am
Posts: 404
Location: St. John's, Newfoundland
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Bump.
The specks are still there but have not increased or decreased. It must not be algae.
_________________
13'x22'x52" 8,000 gallon ProSeries Pool with Borates
Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
Bestway SWG
AquaPro Pro500 50,000 BTU heat pump
TF-100 Test Kit
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linen
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Post subject: Re: Dark specks in one corner of pool Posted: August 21st, 2012, 3:12 pm |
| Mod Squad |
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Joined: July 30th, 2010, 8:56 am
Posts: 5582
Location: Minnesota
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Hmmm....I wonder what they are? Could it be hardened tree sap?
_________________
I am a Pool School attendee and I use my TF100 test kit and the Pool Calculator to properly maintain my: Round 11K gallon AGP with a deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels, Intex SWCG (copper bars disconnected). Also a Rubadub hot tub (chlorine) and a UDS (Ugly Drum Smoker) poolside.
Here at tfp, shocking is a process, not a product. Your are not finished with the Shocking Process until:
1. CC is less than 0.5 ppm, 2. An OCLT shows a loss of 1.0 ppm or less and, 3. The water is crystal clear.
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GreatCanadian
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Post subject: Re: Dark specks in one corner of pool Posted: August 21st, 2012, 4:14 pm |
| Registered User |
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Joined: July 28th, 2011, 7:42 am
Posts: 404
Location: St. John's, Newfoundland
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Holy ****!! Brilliant!! Built a new deck. And that corner is where the ladder is. I drilled holes there to nest the ladder in. Some wood chips or sap must have made its way into the pool. I bet you are correct sir!!
_________________
13'x22'x52" 8,000 gallon ProSeries Pool with Borates
Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
Bestway SWG
AquaPro Pro500 50,000 BTU heat pump
TF-100 Test Kit
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