Thanks for the welcome.
Have seen quite a few gravalex that have used Beetroot in the cure, gives it a lovely dark red finish.
Have just made a 60% bine, added 60g dark brown suger, handfull of dill, and 300g of beetroot liquidised, for 1.5kg side of salmon. Shall leave it overnight and put it in the smoker tomorrow hopefully. Will let you know how it turns out.