Stefan's garters

[Stefan-A]

How big of blocks do they sell it in and how much does it cover out of curiosity?

The brick is the size of a brick and it expands to 7 liters. I use a brick and a half per enclosure, which means 10.5 liters and in a 7.6 x 6.0 dm enclosure, that adds up to a layer of about 2.3 cm.

Math is fun.