Recently started to notice some small black algae spots growing on the steps to my pool. The guy behind the counter at my local pool store recommended I use Silver Algaedyn. Has anyone used this product and can speak to it?
Silver Algaecide for Black Algae
- Thread starter johnnyhammastix
- Start date
reggiehammond
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- Oct 4, 2020
- 2,253
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- CircuPool RJ-60 Plus
Black Algae
This guide provides a step by step procedure for eliminating black algae in your concrete or gunite pool. Read full post here.
www.troublefreepool.com
Avoid putting metals into your pool.
- Jul 21, 2013
- 65,062
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Welcome to TFP and it is great that you checked with us before using the Silver Algaedyn.
We do not recommend metals based algaecides. They risk staining your pool with the metals which will be more difficult to get rid of then the black algae.
www.troublefreepool.com
www.troublefreepool.com
We do not recommend metals based algaecides. They risk staining your pool with the metals which will be more difficult to get rid of then the black algae.
Silver based algaecides
I have run into a couple of reports of using silver based algaecides to deal with persistent mustard algae after other procedures had failed and to kill black algae. Silver based algaecides, like Silvertrene, are expensive and difficult to find. The cost alone argues against using silver based...
www.troublefreepool.com
Algaecide - Further Reading
www.troublefreepool.com
Last edited:
- Jun 24, 2021
- 15,879
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Welcome to TFP!!! 
First thing to do is get a test kit. Here is a link to the recommended kits. Get one with the salt test. I'd recommend the TFTestkits.net TF Pro Salt. Link-->Test Kits Compared
Black Algae
With black algae, the best method is to use a power washer (lower pressure the better, and wider tip, starting far away from the spots and moving in until it starts to blow the algae away). Then get a pressure spray pump, fill with the strongest liquid chlorine you can find and spray the areas with the LC with the pool pump off.
You will then need to run your FC at 20% of your CYA for several weeks.
Either way, as a result of having BA, after the few weeks of FC at 20%, you probably need to run FC at 15% of CYA for life of this plaster.
First thing to do is get a test kit. Here is a link to the recommended kits. Get one with the salt test. I'd recommend the TFTestkits.net TF Pro Salt. Link-->Test Kits Compared
Black Algae
With black algae, the best method is to use a power washer (lower pressure the better, and wider tip, starting far away from the spots and moving in until it starts to blow the algae away). Then get a pressure spray pump, fill with the strongest liquid chlorine you can find and spray the areas with the LC with the pool pump off.
You will then need to run your FC at 20% of your CYA for several weeks.
Either way, as a result of having BA, after the few weeks of FC at 20%, you probably need to run FC at 15% of CYA for life of this plaster.
- Sep 23, 2015
- 2,012
- Pool Size
- 20000
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- Plaster
- Chlorine
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- Astral Viron V25
Grady johnny and welcome to TFP.
Just adding to the other comments. Black spot means your free chlorine has been too low in relation to your stabiliser over the long term. And in terms of alternate pool chemistry silver does little for algae, it is normally targeted as an anti bacterial rather then an algacide and even then is more that bacteria doesn’t like growing on silver rather then sliver killing it.
In almost 15 years I’ve never used any algacides.
Just adding to the other comments. Black spot means your free chlorine has been too low in relation to your stabiliser over the long term. And in terms of alternate pool chemistry silver does little for algae, it is normally targeted as an anti bacterial rather then an algacide and even then is more that bacteria doesn’t like growing on silver rather then sliver killing it.
In almost 15 years I’ve never used any algacides.
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