there doesn't seem to be any mixup on the size of your tank. you said its a juwel 125, 125 Litres of water - the displacement of the internal filter.
instead of relying on your LFS for advice why dont you reserch for yourself. 125L is suitable for a couple of clowns but not much else
instead of relying on your LFS for advice why dont you reserch for yourself. 125L is suitable for a couple of clowns but not much else
