Article in today's Guardian ( Scotland Section) is an interview with the new head of SEPA,in it he specifically mentions salmon farming as a problem to be addressed.
Hope he's allowed to rectify this ecological crime.
Can someone explain why /when these are useful. Reading the contributions it would seem to me that they're either to keep tubes on an even keel or gain greater depth(rather than relying on the sink rate of the line) or have I missed something?
P.S. be gentle!!