Still stacking up grapefruit is not as impressive as gorilla glue and strawberry pie. One of my Vivusun 315 watt CMH ballasts stopped working after only a month’s use. I’m trying to get a replacement but the company is making me jump hoops for warranty. I have had a Topolite 630w CMH for three years and it’s still working great. I cut lights down to 12/12 to see if grapefruit will start to stack up. The smell is definitely getting stronger with the sticky strawberry pie being the strongest.