Here, my fellow aquarists! Precise gallon measurements on the homedepot buckets! (I'm using food grade ones, but the orange ones should be the same) : r/ReefTank
5-Gallon Bucket, White - Walmart.com
5 gal, Open Head, Pail - 1TMH6|PAIL-STL-RI - Grainger
10 Cans and 5 Gallon Buckets: How Much Can They Hold?
Fortiflex Flatback Bucket - Five Gallon
Standard 5 Gallon Buckets & Lids | U.S. Plastic Corp.