i do a res change religiously every week. i add less than what the cannazym bottle says. i only put 1 tsp per bucket. and i found a post on another site with a really good nute schedule. so i did 2 buckets with gh nute schedule....and 2 buckets with this other nute schedule (which actually calls for a lower dose of nutes) and we will see which one turns out best. room temp stays at about 84 day and 76 night. plants are loving life right now. when the women are happy im happy :jointsmile: