That's true.RDcompton03 said:Calculating gross volume of your tank is easy and accurate. Determining the volume of water it holds is what is difficult and less accurate. It comes down to how deep your substrate is and how much area in the tank is taken up with hardscape, equipment, etc.
It is true, but if you input the dimensions of your tank it should still read as a 29 gallon tank. A 29 gallon tank won't hold 29 gallons of water even when there is no substrate or decor, but when you input the dimensions into a tank volume calculator it should read as 29 gallons.vampireshrimpfan said:That's true.
Ah, I see. I was under the impression that the calculator said the tank was 3 gallons based on the dimensions.vampireshrimpfan said:It took me 3 ten gallons to fill it. Maybe I just need to know how to use an aquarium calculator.
I agreeFeohw said:Ah, I see. I was under the impression that the calculator said the tank was 3 gallons based on the dimensions.
The reasons that your tanks hold less than they "should" is because they are measured based on their outer dimensions, not their inner. A 29 gallon tank really only holds around 25 gallons of water. A 5.5 gallon really only holds about 4.8 gallons of water. They are still considered 29 gallon and 5.5 gallon tanks.
When you take substrate and decor into account its even less.