Hola Maria ! I live in Australia, further south than Hecno it is sub tropical. Basically every morning, all year around is 75-100% humidity, and then drops down in the afternoon, so I have had my share of mould problems LOL. Mould..it is what it is, it is part of nature and part of growing MJ in humid areas. The key is prevention. I have had very good results in using a 10-1 Water-Milk spray on the early forming buds. There is a thread about mould prevention etc, search for it here in AFN. Also if I cut some mould out of a plant , if it happens second time, I harvest. whats the sayng.."Better to cut and dry rather than wait and cry" LOL. Some plants even of the same strain may be more resistant than others just due to the fact they are healthier and so are more resistant to any pest and disease attack. I would give Buddha Magnums a try, good solid, stable auto's and quite robust in my exoerience. I also found some of the Shortstuff Seeds strains to be good.