Hi all, I've started a DIY external canister filter but not sure of the required litre per hour requirements per litre/gallon.
Does anyone know of a formula or table?
I have a 4 foot x 18 x 18 - 65 US gal (250 ltr, 55 UK gal).
I'm currently using a canister rated for up to 300 ltr (80 US...