questions from somewhat of a noob

Hello RIU! I am thinking of doing a grow in my closet in a [4x4x6] Mylar tent(I have never worked with ducting b4) with the following Vent Duct Hole dimensions: * Roof: ø 100 mm (4") * Top back: ø 100 mm (4") * Bottom right: ø 100mm (4")

I did some hard thinking of what to get for cooling as I have a 400 HPS(I have read only good light for flowering since LEDS aren't right?) that I never have used before on a full grow because of heat and mold that was generated in the hydro system. I have actually never done a full grow before, I bought an amcor 12k btu portable a/c today didn't know it was a single hose till after I bought it, but shouldn't be a problem as I have read its fixable. Right now I grow with a 300W Lighthouse Hydroponics LED light in two 5 gal buckets currently in the closet temps are 81 F not bad ( With HPS 92 F directly under hps with fans blazing but its still very hot and I had a lot of heat related problems with that )

Right now the big question is what to do from here? I was thinking the exhaust is the only problem remaining and I don't have the option of making any holes or anything I thought maybe I can vent through the light port of my closet somehow without damaging anything. If I am missing anything in this plan please feel free to enlighten me thanks for reading, oh and if it concerns anyone what nutrients I am using they are Canna Coco, bioboost, rhizotonic, and cannazym.

use 2 of the holes for intake and the one in the roof for exhaust you will need an exhaust fan also.

blazedklown said:

use 2 of the holes for intake and the one in the roof for exhaust you will need an exhaust fan also.

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So I would have to tape a duct to the back of the compressor cooler intake on the a/c and get a duct from in the tent to suck it from the outside of the tent by one of those 4 inch ports, use the 1 exhaust port in the closet for a/c thats the 2nd 4 inch port, and for the other 2 why would I need fans doesn't that a/c already have a fan built in to circulate air?

the room you are grown in is like mine and to exchange the air at least once a minute you need a 64cfm fan not a booster fan. you will need an intake fan and exhaust fan i would used a 100 cfm fan on intake and around a 200-250 in exhaust to keep that negative pressure. with that you should be good keep the intake air cool and tent will be cool. what you growin?

shopman said:

the room you are grown in is like mine and to exchange the air at least once a minute you need a 64cfm fan not a booster fan. you will need an intake fan and exhaust fan i would used a 100 cfm fan on intake and around a 200-250 in exhaust to keep that negative pressure. with that you should be good keep the intake air cool and tent will be cool. what you growin?

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Growing from some shwag bag seed, did you read that I had a portable air conditioner I don't need a cfm fan I thought if I have a closed system like this with a/c