So, you bought a "20-gallon" tank at the local pet store. You brought it home. You filled it in the manner of fancy dragon stone. You dumped in two inches of expensive volcanic soil. Now, youre looking at it and wondering: why does the medication dose for a 20-gallon tank atmosphere similar to its going to aim my fish into neon mutants? Well, here is the cold, hard truth. Your 20-gallon tank is probably holding more or less 14.2 gallons of actual water. This is why you obsession the best aquarium volume of aquarium calculator calculator for correct measurements. Most people just wing it. They eyeball the water line. They guess. Then, they bewilderment why their pH is undulation afterward a pendulum or why their expensive reef salt isn't mixing to the right salinity. Ive been there. I taking into consideration approximately wiped out a colony of rare Blue dream shrimp because I thought I had more water volume than I actually did. Math matters.

Most entry-level hobbyists think a rectangle is just a rectangle. You receive the length, the width, and the height. You multiply them. You divide by 231 (if you are play inches to gallons). Boom. You think youre a genius. But youre not. Youre forgetting the internal aquarium measurements. Have you looked at the glass? High-end rimless tanks use glass that can be 12mm or even 15mm thick.