You may need to replace the plank with a new one if the damage is extensive.
How to get water marks stains off hardwood floors.
If neither of these methods work consider these additional ideas for how to remove water marks from wood floors.
White vinegar hydrogen peroxide and baking soda.
Spray the solution onto the exposed wood surface to lighten the stain.
Then scrub it into the stain using a circular motion.
Mayonnaise makes them go away in many cases.
In this case you re beginning to remove the protective polyurethane layers.
Soak a cotton pad inside the hydrogen peroxide place the wet pad on the white marks and allow it to soak in the wood to bleach out the stain.
The best bleach for water stains is one that contains oxalic acid but you may have success with full strength peroxide.
Finally refinish the floor with polyurethane.
Wipe away any excess.
Mix the water and bleach and pour it into a spray bottle.
Allow the floor to air dry.
To remove white water stains on wood floors sand the water damaged area with a fine grit sandpaper to clear the spot and then refinish with wood oil.
Cover the stain with a dry cotton cloth and rub with a hot iron set to no steam for two to three seconds.
There are also home remedies that have successfully been used to clear the stain.
White vinegar deodorizes and also disinfect therefore the best to remove the stain together with the odor.
Dip a clean toothbrush into the bleach and swirl it around.
Water spilled on a wood floor may cause a white stain or mark if the water isn t wiped up immediately.
Finally after you ve eliminated the stain wipe with a simple natural homemade floor cleaner and apply a thin layer of hardwood floor wax to the now stain free floorboards.
Make sure the toothbrush is clean and unused so you don t get any stains on the wood.
You need to remove the finish to bleach these black stains out of the wood and the best way to do that is to sand the affected area by hand with 120 grit sandpaper.
Alternatively bleach out the water spot with a weak hydrogen peroxide solution or baking soda.
These unsightly stains are not permanent.
There are commercial products you can use to remove pet stains from your hardwood floor.
Bleach the part using hydrogen peroxide and then stain the floor with a color that matches that of your floor.
You can also substitute hardwood floor cleaner at this stage to help remove the water stain from the wood.
Lastly try dampening a cloth with denatured alcohol and rubbing over the stain for just a few seconds.
After 5 minutes remove the rag and wipe up any excess hydrogen peroxide.