I've always used sodium metabisulphate powder instead of Campden tablets because it's all I could get when I first started (don't use a lot!). On Monday I pressed a load of apples and got 16 litres of juice. Using my calculation that 1 level teaspoon of sod met = 10 campden tablets and 1 tablet per gallon, I added about 3/4 of a tsp. Now I can't think why I came up with this amount and think I've added waaay too much. I added my yeast yesterday evening and nothing's happening after 24 hours. I suppose I should have added about a third of a tsp for just over 3 gallons. Anyway, given that I've added too much, what will happen, and what should I do? Will the yeast eventually pick up? Should I add more yeast for luck? I'm off on holiday on Sat, so it's going to be left to its own devices for a week. Would be happier going knowing it's started fermenting.

Any thoughts?