Tiny black flakes please help

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abcaquatics
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Joined: Sat 24 Sep, 2016 13:45
My Pool: We have a semi inground vinyl pool that is surrounded by a wood deck and has a permanent metal awning over it. Salt water system with DE Filter. We keep the pool at 85 - 92 degrees at all times and the pump runs 24-7

Tiny black flakes please help

Postby abcaquatics » Sat 24 Sep, 2016 13:55

We have a vinyl pool with salt water and a DE Filter. The pump runs 24-7. Recently we have had an increase in tiny black flakes in the pool. The filter wont catch it and I can not figure out what it is. It has gotten really bad. We put a sock thing over our net and that is the only way to catch it (see photos) if you touch it .. it smudges almost like clumped mascara or maybe ash. We have not had any fires in the area. Ive checked around the pool to find anything that looks like it could come from but found nothing. the pool is covered with a permanent metal awning. All the chems are normal and all the grids in the filter are brand new. Anyone have any ideas on what it is or how to fix it?
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Denniswiseman
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Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Tiny black flakes please help

Postby Denniswiseman » Sat 24 Sep, 2016 16:10

Have you tried a flocculant and vacuum to waste
abcaquatics
Pool Newbie
Pool Newbie
Posts: 5
Joined: Sat 24 Sep, 2016 13:45
My Pool: We have a semi inground vinyl pool that is surrounded by a wood deck and has a permanent metal awning over it. Salt water system with DE Filter. We keep the pool at 85 - 92 degrees at all times and the pump runs 24-7

Re: Tiny black flakes please help

Postby abcaquatics » Sat 24 Sep, 2016 18:22

Denniswiseman wrote:Have you tried a flocculant and vacuum to waste


Yes, tried both didnt work... Vacuuming is pointless, it just shoots it back out as the filter wont catch it even after adding a flocculant
Denniswiseman
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 335
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Tiny black flakes please help

Postby Denniswiseman » Sun 25 Sep, 2016 05:08

You didn't read my post correctly, when vacuuming do it to waste not filter or recirculate
abcaquatics
Pool Newbie
Pool Newbie
Posts: 5
Joined: Sat 24 Sep, 2016 13:45
My Pool: We have a semi inground vinyl pool that is surrounded by a wood deck and has a permanent metal awning over it. Salt water system with DE Filter. We keep the pool at 85 - 92 degrees at all times and the pump runs 24-7

Re: Tiny black flakes please help

Postby abcaquatics » Sun 25 Sep, 2016 12:31

Denniswiseman wrote:You didn't read my post correctly, when vacuuming do it to waste not filter or recirculate


I know, we did that before and it cleared it up for about a week but then slowly started coming back and then about 4 days ago it got really bad. I am trying to find out the cause of it so we do not have to keep doing it.
abcaquatics
Pool Newbie
Pool Newbie
Posts: 5
Joined: Sat 24 Sep, 2016 13:45
My Pool: We have a semi inground vinyl pool that is surrounded by a wood deck and has a permanent metal awning over it. Salt water system with DE Filter. We keep the pool at 85 - 92 degrees at all times and the pump runs 24-7

Re: Tiny black flakes please help

Postby abcaquatics » Mon 26 Sep, 2016 02:29

I am starting to think this has something to do with the heaters .. either the gas or the solars. Wondering if it is maybe rubber or some sort of coating from inside the piping. I re routed the water by turning the valves off today so we will see if it makes a difference.
RubyKBlack
Pool Newbie
Pool Newbie
Posts: 2
Joined: Tue 27 Sep, 2016 23:36
My Pool: My pool is a big one and has a pump and filter

Re: Tiny black flakes please help

Postby RubyKBlack » Wed 28 Sep, 2016 00:02

I think this is black algae. They are very difficult to remove. It can stand up against chlorine so adding chlorine to the water won’t be effective. I too have the same problem with my swimming pool. Anyway I managed it by scrubbing the sides of the pool. I think scrubbing can be the only way to tackle black algae.Sanitizing the pool related items will also be effective. This blog ( http://www.ferraripools.com/blog/pool-w ... ack-algae/ ) deals with some of the tips for getting rid of black algae in the pool.
Denniswiseman
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 335
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Tiny black flakes please help

Postby Denniswiseman » Wed 28 Sep, 2016 03:37

I doubt that it is black algae because it is free and not adhereing to anything and can be vacuumed, however if you want to try for it follow these links to
Slam and Chlorine / CYA Chart
abcaquatics
Pool Newbie
Pool Newbie
Posts: 5
Joined: Sat 24 Sep, 2016 13:45
My Pool: We have a semi inground vinyl pool that is surrounded by a wood deck and has a permanent metal awning over it. Salt water system with DE Filter. We keep the pool at 85 - 92 degrees at all times and the pump runs 24-7

Re: Tiny black flakes please help

Postby abcaquatics » Thu 29 Sep, 2016 18:35

Problem solved!! Finally figured it out and I was right it was an issue involving the heating system. We have a gas heater and a solar system. Well the black flakes are EPDM Synthetic Rubber from the deteriorating solar collectors. I spent hours searching the web and finally came across a guy who had the same issue and posted a blog about it. So I re-routed the water away from the solars and sure enough the black flakes stopped coming out of the return. Did another vacuum to waste and havnt seen a flake since. We called the solar company and they are coming out soon to fix the problem. For WEEKS I have been stumped on this problem and sooo glad I found that blog. If you interested in reading it .... http://www.h2otsun.com/epdm/
Denniswiseman
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 335
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Tiny black flakes please help

Postby Denniswiseman » Fri 30 Sep, 2016 04:09

That's brilliant
So glad you sorted this difficult problem
Thanks for posting back as it's our collective knowledge that helps others deal with similar problems

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