help!! new brewer

hi all i have pressed/pulped and juiced apples and have 27ltrs of juice in 2 wine fermenting tubs with airlocks. tub 1 has had campden tabs then a cider yeast 24hrs later. tub 2 had campden tabs then had nottingham yeast added again 24hrs later. it has been over a week but no froth, the lids do appear to have tightened (gas)? but thats it! does this sound ok or have i ballsed it up any advise or help would be greatly recieved
cheers crusty

Welcome.
What kind of wine tub? The lid is tight? The airlock is not clogged? The Air lock has Vodka or water or someting in it?

thanks for the quick reply. yes the lid is tight and the airlock has water in it. when i say tub its a large opaque bucket with a lid and air lock on the top(from a home brew store)
cheers crusty