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.
The beauty of this trick is it works in daylight and in no time at all, just a few minutes time and you're done. These days, we use Ajax dish liquid. Warning: Not all brands of dish soap will work! First, fill a five-gallon pail with cool, clean water (don't put soap in first).Then add several good squirts (about 1/4 cup or so) of dish soap into the water and stir slowly to mix, but not so much as to form suds.irst, fill a five-gallon pail with cool, clean water (don't put soap in first). Then add several good squirts (about 1/4 cup or so) of dish soap into the water and stir slowly to mix, but not so much as to form suds.