about half an hour to an hour
It's dechlorinator etc.
Firstly, hopefully you do not have goldfish in the 'goldfish bowl' as they need at least 20 gallons for one goldfish. That being said, you can add sea shells to a tank provided that you have washed the shells clean with one part bleach to 19 parts water (1 cup of bleach to 19 cups of water), rinsed the shells very well in water, then soaked it in treated water (water that you have added Prime or Amquel to for example) before adding them to your tank.
To prime a chalkboard before using it, first, clean the surface with a damp cloth to remove any dust or residue. Then, rub the entire surface with the side of a piece of chalk and erase it. This will create a layer of chalk dust that will help prevent ghosting when you write on the board. Finally, wipe the board clean with a damp cloth and it will be ready for use.
61 is the prime number before 67.
go to the pet store and buy a product called prime. add required drops to a gallon of water. change water as needed. if its really nasty clean out the gravel well. an old collander works well.
The prime number before 8 is 7.
There were 16 prime ministers before him.
There are 25 prime numbers before 100.
prime the prime meridian
The last prime number before 50 is 47.
The largest prime number before 1000 is 997.
prime number just before 97 = 89