Water in ariel, how can i sort it out?

Sorry to say but the only answer is a new ariel lead. I ume that your room is upstairs, so it will be easy to put arel in loft, run cable across loft and drop down into your room. Or it may be that you can put ariel in loft, cross loft and drop lead through the soffitt and down the wall into your room. It is quite possible that the water is entering the cable in the ariel box, or through any area that is damaged. When not in use pull ariel out of set and make a downward slope and let the water drain out into a bowl. Good luck.