None. A hole has NOTHING in it!
30" x12" x18" = 6480 cu ins. 231 cu ins = 1 gallon US. The tank filled to the brim will hold 28.05 US Gallons approx. When in use the tank will actually hold (internal measurements) 29.5" x 11.5" x17". = 5767.25 cu ins which is 24.97 US Gallons. The basic rules for keeping fish successfully are :- 1 inch of fish needs a minimum of 1 gallon of water. :- Every tank needs a permanently running cycled filter. :- Every tank need at least 50% of its water changed every week. Follow and keep to the above rules and your fish stand a chance of survival. Fail to keep them and I can guarantee that your fish will be constantly getting ill and maybe dying.
no .of bricks = area of room /area of bricks area of room = 9 X12 X12 X12 inches ( 1 foot =12 inches ) area of bricks =3 X8 no.0f bricks =9 X12 X12 X12 inches /3 X 8 =648
0
120
I assume your nominal 15 gallon tank is 24"x12"x12". It will actually hold a tiny bit less than 15 gallons filled to the brim. If you have 1 inch of gravel for plants to grow in and fill to within 1" of the top, the tank will hold 12.46 US Gallons.
The recommended size tank for Bettas to breed in is 24"x12"x12". I guess if you went down to 18"x10"x10" you may get away with it but you will need to keep a very close check on the water quality and immediately they stop the spawning process you will need to remove the female otherwise she will be killed.
Shortbed trucks where equipped with a 25 gallon tank. Longbeds had either the 25 or the 34 gallon tank. Measure the tank or tank shield to determine which. 25 gallon is 46"x12"x13.5" 34 gallon is 59"x14"x13.5"
Shortbed trucks where equipped with a 25 gallon tank. Longbeds had either the 25 or the 34 gallon tank. Measure the tank or tank shield to determine which. 25 gallon is 46"x12"x13.5" 34 gallon is 59"x14"x13.5"
That is 1440 Cubic feet which calculates to 10,772 gallons
To find the volume in cubic inches, multiply the length, width, and depth of the rectangle (assuming the depth is 1 inch). Then, convert cubic inches to gallons by dividing by 231 as 1 gallon is approximately 231 cubic inches. The rectangle would hold about 9.6 gallons of water.
Zebra Danios (Brachidanio rerio) are usually bred in small tanks of around 24"x12"x12" in about 4 or 5 inches of water. They scatter none adhesive ova (eggs) which sink to the bottom fairly rapidly. A layer of glass marbles is usually placd on the base of the tank so that the ova can slip down between them to stop the adults from being able to eat them. Once spawning is complete the adults are removed from the tank.
About 8,600 gallons.
tank volume is based on cubic inches... if the tank is 4ft x 1ft x 1ft.... that is 48 x 12 x12 = 6911 cuin. divide that by 231 cuin/gal and you get approx 29.9 gallons this does not allow for the thickness of the glass or the fact that the tank will not be filled up to the very brim.
If you mean 14 times 12 then it is 168
12 x12 = 144
You will need a 24"x12"x12" tank with a heater/thermostat set at 80F, a thermometer, an air driven box/corner filter and an air pump to drive it. A glass cover for the tank (helps protect the nest) and a light over the tank. Floating plants are usefull for the male to use in his bubble nest construction. A few rocks making hidey holes and other rooted water plants in clumps are also usefull for the female to hide in when she needs to. Then I guess you will need a male and female Betta splendens both in breeding condition. I usually add the female to the males tank rather than vice-versa.