Aquarium Lids: How to Find the Right Size for Your Tank
We all know the struggles of trying to find a proper fitting aquarium lid. There are so many brands and styles available that it can be overwhelming at times. Today we are going to go over how to properly measure your aquarium for a glass canopy or aquarium hood.
Standard Framed Aquariums:
When measuring the frame of a standard glass aquarium it is important to measure the inside lip of the frame, not the outside of the frame as all lids will sit on the lip that is inset. If the tank has a center brace, it is important to only measure to the lip of the center brace as glass lids will have 2 pieces, this is most common in tanks that are over 36" long. Measure as accurately as possible.
Below is an example of measuring a Seapora 10 Gallon Standard Aquarium (20”x10”x12”). Notice how the tape measure is placed on the inside of the aquarium frame and the final number for a maximum fitting length is taken to the nearest fraction of an inch, this indicates the absolute maximum length glass lid your aquarium can accommodate. Reading the tape measure, you will see that the aquarium frame will fit any lid from 19 1/8” to 19 3/8”.
Seapora/Aquarium Masters Glass Lid Sizing:
| Glass Top Size | Tank Size | Width |
| 10" X 10" | 10" Cube | 9 1/4" |
| 12" X 12" | 12" Cube | 11 3/16" |
| 16" X 8" | 5.5 Gallon | 15 3/8" |
| 20" x 10" | 10 & 20XH Gallon | 19 3/8" |
| 24" X 12" | 15, 20H, 30XH Gallon | 22 15/16" |
| 30" X 12" | 20L 29 & 37XH Gallon | 29 1/16" |
| 36" X 12" | 30, 38 & 44XH Gallon | 35 1/16" |
| 36" X 18" 2 Piece | 30B, 40B 50, 54, 65 Gallon | 16 3/4" |
| 48" X 13" 2 Piece | 40E & 55 Gallon | 22 15/16" |
| 48" X 18" 2 Piece | 45 Frag, 75, 90 & 110XH Gallon | 22 9/16" |
| 48" X 24" 2 Piece | 60 Frag, 80 Frag, 120 & 150XH Gallon | 22 3/4" |
| 60" X 18" 2 Piece | 120XH Gallon | 28 7/8" |
Marineland/Perfecto Glass Lid Sizing:
| Glass Top Size | Tank Size | Width |
| 16" X 8" | 5.5 Gallon | 15 5/16" |
| 18" X 18" | 25 Gallon Rimless | 17 1/16" |
| 18" X 20" | 37 &47 Column | 18 11/16" |
| 20" X 10" | 10 & 16H Gallon | 19 5/16" |
| 24" X 12" | 15 & 20H Gallon | 23" |
| 30" X 12" | 20L, 29 & 37 Gallon | 29 3/16" |
| 36" X 12" | 30H & 40H Gallon | 35 3/16" |
| 36" X 18" 2 Piece | 40B & 65 Gallon | 16 7/8" |
| 48" X 13" 2 Piece | 40E & 55 Gallon | 22 15/16" |
| 48" X 18" 2 Piece | 75, 90, 110 Gallon | 22 3/4" |
| 48" X 24" 2 Piece | 120 & 150XH Gallon | 22 3/4" |
| 72" X 18" 3 Piece | 125 & 150 Gallon | 22 3/4" |
| 72" X 24" 3 Piece | 180 & 220 Gallon | 22 3/4" |
Aqueon Glass Lid Sizing:
| Glass Top Size | Tank Size | Width |
| 12" X 6" | 2.5 Gallon | 11 5/16" |
| 16" X 8" | 5.5 Gallon | 15 9/16" |
| 20" X 10" | 10 Gallon | 19 3/8" |
| 24" X 12" | 15 & 20H Gallon | 23 3/16" |
| 30" X 12" | 20L & 29 Gallon | 29 3/16" |
| 36" X 12" | 30L Gallon | 35 1/8" |
| 36" X 18" | 30B, 40B & 65 Gallon | 35" |
| 36" X 18" 2 Piece | 30B, 40B & 65 Gallon | 16 7/8" |
| 36 Gallon Bowfront | 36 Gallon Bowfront | 29 1/8" |
| 50 Versa 2 Piece | 50B Gallon | 16 7/8" |
| 72" X 18" 3 Piece | 125 & 150 Gallon | 22 1/16" |
| 72" X 24" 3 Piece | 180 & 210 Gallon | 22 1/8" |