[f&vlady]

Hi, I recently bought a walk-in polyhouse thingy, at the moment it houses my toms, chilli and pepper plants at night and also daytime when it's raining (which has been nearly every day lately!!) I close it up late night and open first thing in morning but there's lots of moisture inside, I have bowl of water in there at all times is this ok? should I wipe down insides daily? I have lettuce seedlings for next sowing in there too and I notice top of compost getting green bloom, any advice?
Also, there was an article in our local paper today regarding GIY project which is going to be starting up soon here, just wondered if any member here has become involved in same, had a look at website (www.giyireland.com) and seems to be worthwhile.