We have determined the serum content of vitamin B12 by microbiologic assay in patients with acute and chronic liver disease and have investigated the absorption, the urinary excretion and the plasma clearance of radioactive vitamin B12.
The amount of gallons of water in a pool varies greatly depending on the size of the pool. The average in-ground backyard pool holds between 18,000 and 20,000 gallons of water.
How many gallons of water does a twenty gallon fish tank hold? a 20 GALLON tank does have a capacity of 20 gallons.   Hope you have a great time with your spacious (to me at least)  aquarium, i have a 5 gal. because that is all i canâ¦ support and  afford right now, for a 20 gal.