This must be an algaecide of some sort possible a low grade of chlorine. Did you follow the instructions EXACTLY? Is this product supposed to settle on algae spots? If not , did you brush it to keep it from clumping and settling on the bottom of the pool? The black stains, possible caused by the product burning the plaster where it settled --- improper use of product. Impossible to know without seeing the stains and finding out just how you used the product.
Contact Bioguard for further info.
Yes, plaster can absorb and retain stains from various substances such as coffee, tea, wine, and food. These stains can be difficult to remove because plaster is a porous material. It is important to clean up any spills quickly to prevent staining.
For marcite or plaster finish - Acid Wash. Google "acid wash" . Also Pumice stone will srub off black or green algae.
My experience is that the stains will go away by themselves, through the effects of the chlorination of the water. Does not matter if the pool is a salt pool or fresh water pool. If the pool has a plaster finish, brushing the stains with a wire pool brush will speed up the process.
How do we remove leak stains from headliner?
It should easily remove red win stains. As with all stains you will want to remove it as soon as possible.
to remove brown stains from your teeth you will have to brush them or floss them...
White spirit can effectively remove oil-based stains, grease stains, paint stains, and tar stains from surfaces. It is commonly used as a solvent to dissolve and clean these types of stains.
Black stains at the bottom of the toilet bowl are often caused by mold, mildew, or mineral deposits. These can develop from moisture, lack of sunlight, or hard water. Regular cleaning with a disinfectant or descaler can help prevent and remove these stains.
Shout removes stains from jam, grass stains, coffee stains, ink stains, blood stains, motor oil stains, etc.
Green stains (copper color) that cannot be removed indicate you might have a pH problem. K
how can you remove walnut stains from your car paint with out hurting your paint on your car
Yes. Bleach, white vinegar and lemon juice are often suggested to remove such stains.