It only helps by it creating a more ideal environment for the crays to be honest Ian...they were prolific amongst all the waters in this string in late 70s through to early 00s...and the fish were benefiting from it via very good weight gains obviously (Chris Balls own words on Big moor were that it equalled Redmire back in those early days).....they were run as good specimen waters up until there was a change in club committee politics....which saw a swing towards match/pleasure anglers...so they cut the salinity in them....killed the crays...dropped the weights on the fish...and increased the biomass.......they are all owned by different clubs now...and its starting to get some of its old appeal back