# Is it normal to lose about 1.5 inches of water a week from a 10K gallon in-ground pool in Florida?

Probably perfectly normal. I lose that in a 25,000 gallon pool in Houston.

### What is the psi on the lid of a 55 gallon drum which is pressurized with air to 6 psi?

youve got normal air pressure on the outside ( about 14.7 psi) and inside, then 6 psi above this on the inside ( guage pressure), so the net pressure is 6 psi, the force on the lid = area of lid in square inches * guage pressure A 55 (us) gallon drum has a diameter of 22.5 inches, yielding a surface area of 400 sq. ins. multiply * 6 psi = 2400 lbs. force on…

### How many Cory catfish can go in a 10 gallon tank?

If your tank is a 10 gallon (filled to the brim) tank, it will only have about 8 gallons of water in it under normal conditions. The maximum amount of Corydoras you should allow is 4 because the rule is 1 inch of fish needs a minimum of 1 gallon of water. (Corys grow to about 2 inches plus). You will also need a 24/7 running filter and the tank will also need to have…