How much water does it hold?
Almost everything in aquaculture - stocking, feeding, dosing, water changes - starts from one number: how many litres of water are actually in your tank or pond. Enter your shape and dimensions and we'll work it out. Measure the water depth, not the full height of the container.
Measure the wet part. Use the depth of water you actually keep, not the rim of the tank. A tank filled to the top and a tank filled halfway hold very different amounts.
⚠️ A close estimate, not a lab measurement. Irregular ponds, sloping sides and rounded corners all change the real figure - if the shape is far from a neat box or cylinder, treat this as a starting point. Once you know your volume, plan your fish load with our stocking density calculator.