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 air later its going to viewpoint my fish into neon mutants? Well, here is the cold, difficult truth. Your 20-gallon tank is probably holding just about 14.2 gallons of actual water. This is why you compulsion the best aquarium volume calculator for exact measurements. Most people just wing it. They eyeball the water line. They guess. Then, they wonder why their pH is swinging when a pendulum or why their expensive reef salt isn't mixing to the right salinity. Ive been there. I in the manner of approximately wiped out a colony of scarce Blue drive 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 understand the length, the width, and the height. You multiply them. You divide by 231 (if you are affect inches to gallons). Boom. You think youre a genius. But youre not. Youre forgetting the internal aquarium tank calculator measurements. Have you looked at the glass? High-end rimless tanks use glass that can be 12mm or even 15mm thick. If you do its stuff the outside, youre calculating the volume of the glass, not the water.