So, you finally did it. You bought that glorious glass box. It's sitting there on your reinforced stand. It looks huge. It looks magnificent. But here is the thing. Did the guy at the accrual lie to you? Is it in reality a 75-gallon tank? Or is it a 68-gallon tank masquerading as a unventilated hitter? You dependence to know. Not just for bragging rights on Reddit. You compulsion to know because if you overdose your fish tank substrate calculator behind copper or salt based on a guess, things go south fast. I later thought I had a "true" 20-gallon long. I treated it next a 20-gallon. My birds melted within forty-eight hours. Why? Because I didnt know how complete I dexterously calculate the volume of my aquarium in cubic inches. I forgot that glass has thickness. I forgot that substrate takes stirring space. I was basically guessing. Don't be subsequent to me.

Calculating aquarium volume is the first play in of fishkeeping. It is the initiation of everything. It dictates your filtration system requirements. It tells you how many fish you can actually keep without turning the tank into a toxic soup. Most importantly, it gives you the cubic inches you compulsion to convert to real, usable water capacity.

The basic math seems easy. You probably recall it from center school. Length time width times height. Simple, right? Well, sort of.