In the aquarium hobby you actually only distinguish between Liters in the metric system and US Gallons in, well the US. UK gallons have no significance, except if a beginner calculates themselves.Also worth noting that a US gallon is 3.8 litres, an imperial (uk) gallon is 4.5 litres.
Kind of true I suppose as things sold in the UK are generally in litres (note the correct spelling ).In the aquarium hobby you actually only distinguish between Liters in the metric system and US Gallons in, well the US. UK gallons have no significance, except if a beginner calculates themselves.
A standard 10-Gallon is roughly 50x30x30, a long is 60x20x30cm. Give or take, because these are pretty much only standard in the US.
Debatable, in German it's written with -er, and I hang out a lot with Irishmen, Scots and Americans, who all tend to write it the same way.(note the correct spelling )