Thanks Number9, I will give that a try.
Seems it is also called Sea Moss and available - when they get stock back in - from Walthers (USA)
Assorted Sizes
Walthers Part # 528-23100, p. 343 Walthers 2011 HO Scale Reference
A scale, $28.99, not currently in stock at Walthers, Expected: 29-Jul-2011
Walthers even have stockists in Canada!
Thanks