234 



AQUAKWM APPLIANCES 



not working, in order to prevent water backing up into air supply 

 pipe. All rubber joints should be tightly secured by wrapping with 

 thread or narrow strips of electric tape. Rubber cement spread on 

 connecting surfaces helps make a good job. 



This arrangement both filters and aerates the water. If filtering 

 is not needed, the filter can be removed and aeration will go on. 



Water can be raised by this method from fifteen to twenty-five 

 inches above level. To secure the greater height, use 34-inch inside 

 diameter tube, take plenty of drop and allow eight inches from low- 

 est point to C. By this means and a little ingenuity a return foun- 

 tain can be made. To secure a uniform flow it would require a small 

 tank to receive the discharge from the pipe, and from this an over- 

 flow to aquarium in case the water supply comes too rapidly for dis- 

 charge rate of fountain. 



It is not necessary to carry pipes over edge of aquarium as shown 

 in diagram; they may be carried through the bottom, carrying dirty 

 water directly down. The rise tube should be brought up through 

 inside, over edge of filter. Short pieces of tubing long enough to 

 reach above the sand and to extend an inch below the aquarium base 

 should be used for passing through the slate. A very effective means 

 of securing these in permanent position is to melt by alcohol blow- 

 torch some chips of gum shellac. This melting is done in the aqua- 

 rium directly around the tube and is continued until a small mound 

 is formed. A piece of wet cardboard will protect nearby glass from 

 the heat. Gum shellac has perfect resistance to water. It will adhere 

 to almost anything and is of special value 

 in connecting glass to metal. When cool 

 it is quite hard. 



Fish-Carrying Case. A box similar 

 to illustration, built to hold the standard 

 straight-side candy jar is a great con- 

 venience in carrying fishes for short dis- 

 tances. It may safely be used for trop- 

 icals in moderately cold weather if the 

 jar is , completely wrapped in several 

 thicknesses of newspaper before placing- 

 in box, provided the exposure is not un- 

 reasonably long. Many of these cases 



are in use. The height is about 14 inches, i. „, ,, 



i^iG. ZZ\. Carrying C.'vse 



