The seldom seen green flash occurs just before the last part of the sun disappears from view at the end of the 15 second clip. According to NASA, the almost-mythic spectacle is caused by the atmospheric bending and scattering of sunlight.
There are some products for the fountains which remove the suds easily. They are found in the market and they are dissolved in the substances that cause the problem. The organic material left on the tap of the fountain mostly causes the suds. You can use the towel to soak the suds from the place. To remove the soap suds you can use the wet vacuum cleaner gently. You can use silicon which is a great anti foaming agents. Try to add little bit of salts that also prevents the growth of the suds. You can also use vinegar. Just a capful of vinegar is enough for a wall fountain to remove the suds.
Wait another 30 minutes, then sweep up and dispose of the cat litter. Soak up remaining remnants of oil on the surface of the block paving with an old, dry rag. Press the rag onto the surface of the paving and into the gaps. Don't rub the oil stain as it will make it harder to remove.Throw out the rag. Pour grease-cutting detergent into a bucket. Look at the directions on the bottle and add hot water as instructed. Dip a scrub brush into the bucket to get it moist with the detergent and water mixture.Scrub at the stain on the block paving.hrow out the rag. Pour grease-cutting detergent into a bucket. Look at the directions on the bottle and add hot water as instructed. Dip a scrub brush into the bucket to get it moist with the detergent and water mixture. Scrub at the stain on the block paving.