thanks for all the replies so far guys great help. If I run it with the scrubber off then it drops alot. The intakes are not passive (I was wondering if this mattered) they are cheap desk fans caulked into holes in the side. The exhaust doesnt seem to be powerful enough I will probably just run it with no scrubber till flowering. During flowering my plan is to have the 12 hours of light during the night with the scrubber off and some incense lit. Then the 12 hours of dark during daytime with the scrubber on. I dont really see any other solution because to fix this properly id need a really nice inline duct fan and thats not gonna happen cuz im broke....I guess we will see how it goes.