224 CONSTRUCTION TANKS AND POOLS 



in drug store) in the water after it has stood a day and been stirred 

 up. Then slowly add and stir in commercial sulphuric acid until 

 the paper shows a faint pink hue. Allow to stand another day, and 

 if the paper goes back to blue, repeat addition of acid. When the 

 pink shade remains draw oiif water, clean thoroughly and use. Enough 

 acid to turn the paper a distinct pink or red should not be used. 

 Alwa3's stir water well before determining color of paper. This test 

 is only for the acid process. 



The lime seasoning process can also be used to improve new 

 wooden tanks. 



Aquarium or Tank Capacity. To ascertain the gallon capacity of 

 any rectangular tank, multiply the length, breadth and depth together 

 in inches. Divide by 231. The result will be in gallons. 



A gallon weighs 8 1/3 pounds. 



