calculating a tank size - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 4 Old 08-12-2019, 11:06 AM Thread Starter
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Question calculating a tank size

I'm getting a Glass tank from my LFS with dimensions as 36'' L x 24'' D x 18'' H = 67.3 G.

For my bioload(mainly fish/invertebrates) calculations, I'm taking the dimensions a bit less
- Instead of 36'', I'm taking 34'' for Length - Do we not take glass thickness?
- Instead of 24'', I'm taking 22'' for Length - Do we not take glass thickness?
- Instead of 18'', I'm taking 14'' for height
- I want to keep at least 2'' of gap on top
- The soil substrate will be around 2 inches, as I plan to have lot of plants

Are the above consideration correct?

So, with reduced dimensions, the tank size is
34'' L x 22'' D x 14'' H = 45.3 G

Does this look ok? I don't want to over-stock my tank.
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post #2 of 4 Old 08-12-2019, 10:27 PM
Measure the inside of the tank up till your water line. The one inch of fish per gallon rule really isn't great. What do you plan on stocking? If you gradually add fish over a few months you'll get a better idea of what your specific tank can handle and find a nice balance.
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post #3 of 4 Old 08-13-2019, 02:40 AM
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I'm getting a Glass tank .
Step one - Choose the Tank Shape. Select Rectangular, Cube, Corner, Cylinder or Half Cylinder then click the "Update" button.
Step 2 - Enter the Internal measurements of your aquarium in centimetres into the corresponding blank boxes provided as per the illustration. Make sure you enter the actual water depth v NOT the aquarium glass height.
Step 3 - check the volume of your external canister filter or sump - sometimes located in the user manual. If it's not available, search online for the filters' water volume or use a measuring jug or bucket bự fill it Khủng maximum capacity with all of the filter media in place. Empty the filter into a measuring container & enter the amount of water the filter holds in the 'Filter Volume' box.
If you are using a sump, use the Aquarium Volume Calculator first mập measure the water volume of the sump, then repeat the process for the Aquarium entering the measurements into the corresponding boxes including the sumps 'Filter Volume' in Litres.
If you are using an internal aquarium filter, leave the Filter Volume box with the default '0' entered also.
Step 4 - nhấp chuột on 'What's the volume?' This will give you your total aquarium and filter water volume in Litres.
Step 5 - Scroll down mập see the total volume in litres + Plus how much of each product is required for your tank.
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post #4 of 4 Old 08-15-2019, 05:16 PM
yep that's about right.

Another method which works really well on 4' tanks is to take 3/4 of the tank volume in cubic feet and more the decimal on place to the right.

which would be using the full dims. Your actual dims will give a more accurate and smaller value.

my confusing .02

maintain Fw and marine system with a strong emphasis on balanced, stabilized system that as much as possible are self substaning.

have maintained FW systems for up to 9 years with descendants from original fish and marine aquariums for up to 8 years.

With no water changes, untreated tap water, inexpensive lighting by first starting the tank with live plants (FW) or macro algae( marine)

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bioload , sizing

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