Break a chlorine tablet in half and rub it.
Black algae pool brush.
5 heavy duty pool algae brush with stainless steel wire bristle for concrete and plaster pool spa to brush off and remove hard to reach corner algae.
Black algae has tentacle like appendages which drill into the plaster.
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Scrub the black algae away with a good stiff pool brush.
A wire brush is the only way to remove it.
This algae typically brushes away from pool surfaces easily but it quickly returns to nearby areas.
This cannot be stressed enough.
Chances are good that if your pool has black algae your filter probably has it too.
If you can vacuum to waste this is preferred to keep the black algae spores out of the filter.
Before you begin the lengthy process of removing it it s a good idea to identify whether or not the culprit is in fact what you think it is.
And then brush it one more time for good measure.
If you truly have black algae on your fiberglass pool a wire brush will scratch the surface.
Brush is 10 inches wide for an easier and stronger clean on stubborn buildup.
Use your nylon brush to scrub the sides and bottom of the pool as many times as it takes to make sure all the pool algae are brushed away.
However you need to knock the heads off.
You can try steel wool or a razor blade on the affected areas.
Remove as much debris as possible using a good wide mouth leaf rake.
Scoop the debris out.
This will help break down the protective layer and make it.
How to get rid of black algae.
Vacuum the pool very thoroughly.
Using a quality steel bristled pool brush go over all areas again with vigorous brushing.
Stiff stainless steel wire bristles are effective against extremely stubborn algae buildup not designed for use with vinyl pool liners.
Aluminum handle is angled at 45 to present the brush in an ideal position for easy pushing and effective cleaning.
Anything more than that will scratch the gel coating.