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Try 1 oz. of bleach to a pint of water. Soft scrub brush in a circular motion to get into the grooves. May need to repeat cleaning a second time to kill the algae or mould. However if it an exterior slate you must seal it as it will always get moulds, mosses and algae.
Do not attempt to add a higher concentration of bleach as it may discolour the slate.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoI am not sure this will remove the algae, but after trying several products to keep the algae from accumulating in my outside fountains, I put shock that is used to clean the pool. It really kept the water clean and free of algae. Of course, you would take precautions if you have pets to insure they do not drink from them. You could try this on your concrete.
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How can you get rid of the algae in your terrapin tank?
There are several different ways to remove algae from a pet turtle shell. Most common methods are using a soft wet washcloth to gently rub off the algae, or using a soft bristle toothbrush or vegitable brush to remove the algae. More information on caring for pet turtles can be found at http://www.allturtles.com/care_sheets/first_aid.php
What do you do if your pool has green algae and black algae spots?
If it is genuine 'black algae' it is very difficult to remove without emptying the pool and gouging the black algae out of the pool surface. Other algae can be removed by shocking the pool, filtering continuously and brushing walls while maintaining a good sanitizer level.
What is the largest brown algae?
Some of the types of algae are staghorn algae, black brush or beard algae, green spot algae, and green thread hair algae. Other types of algae are green water algae, and black green algae.
What are the three types of multicellular algae?
red algae, green algae, and brown algae
How do you draw algae?
plant+water=algae plant+ocean=algae plant+sea=algae
Why is there yellow algae forming in the bottom of your cement pool?
Sounds like mustard algae. Usually happens after a lot of rain or warm weather.
How do you remove cement smell?
remove it buy washing with oil
How do you remove cement in wc?
with a chisel?
How do you remove cement from clothing?
cut it out of the clothing
How do you remove stain from cement?
you put a can of beans in it
What are the best uses for a magic eraser?
The magic eraser is best used from removing stains from various items. It cleans coffee stains from mugs, it can remove algae from cement, and can also be used to clean dried paint from door hinges!
How do you remove cement from the body of your car?
wet a rag pour a can of coke on it and then rub it on the cement. then get a stiff wire brush and then rrub it against the cement
Can you remove cement from vinyl siding?
If the cement is not too old, try water and a soft scrub brush.
How do you repair Asbestos-cement pipe?
Remove and replace it.
How do you remove bricks from cement floor?
with a hammer and chisel
How do you remove the brownish green sludge from the scenery in a fish tank?
If the substance you are refering to is algae and the scenery is moveable you can simply remove the algae covered items and scrub them in clean water. If you are refering to an algae slime on the substrate then you can remove it simply by syphoning it into a container for disposal. If the algae is on plants then having a few algae eating fish species like plecostomus or mollys in there will help keep it under control. Excess algae is usually caused by too much light for too long.
What is a sentence using the word algae?
You must clean the inside of your fish tank regularly to remove the algae that grows there. The algae grew thick on the rocks by the beach.
