i scrogged a good deal and i learned over time that with cabinet scrogs it becomes necessary to have an intake above the screen as well as below because as the buds fatten up late in flower, they tend to form a barrier that blocks air circulation from below to above the screen. it might be a good idea to put one in as soon as possible to avoid any heat stresst problems later. i used a cooltube as well and the upper intake was still necessary. i wish someone would have told me this little tip when i was building my scrog cabinet, instead i had to do it right in the middle of a grow because the airflow got so restricted that the plants began to suffer. the upper intake solved all those problems. keep it up, you plants look great