how many sizes of plastic tubing

[CHESTER]

I have just brought an external filter Jeboa 808, the inlet and outlet green plastic tubing seem like not a common size available at any LFS. Can anyone advise me a place to haunt?

[tawauboy]

is there any size markings on the tubes?
you can cut off a small section of the pipings and bring it to any lfs to match. if lfs does not have the sizes that you want, try hardware shops.
you can get piping which are slightly smaller and use hot water to soften it before plugging it to the barbs of the filter.