hydrohut problems are a myth. with proper intake and exuast setup along with aircooled light and how u take care of your plants there will be no problems remember hydrohut are seperate enclosed rooms using plastic like materal for walls somewhat like a green house effect humidity , temps,water...
i`d say you need more nitrogen and as for the hydrohuts , what i`ve seen there are no problems as long as you have proper air movement through intake and exuast .