Same difference...you're all proud Celtic nations...scattered to the four corners when we Anglo Saxons invaded...
What's your PhD in again, Tom
Hah. I'm from Cornwall actually, but they're pretty stingy down there too.
It's in Troi's signature mate. Here it is:The Soil Substrate Planted Tank - A How to Guide | UK Aquatic Plant SocietyTroi , Sorry can't see any link. ! ( it could be me , not looking hard enough )