At this point you are getting close to being done.If you havent already make sure you wire a plu to your inline duct fan if this is the kind you used.Its basically 2 wires put on 2 screw and tightened down.Now for the cool stuff in the cooler.You can use a variety of things such as regualr ice, frozen water bottles, frozen 2 liter bottles of watre or co2 chunks.The bigger the cooler the more you can put in the colder and longer this will run.My combination used 4 water bottle frozen at the bottom then I use my 5 lb block of dry ice.I leave the dry ice in its store bag then put it in 2 plastic gracery bags with the top of the bag opened.This will allow the co2 to evaporate and be pushed into the room which is a bonus.I then surrond the chunck of dry ice with regualr ice about 1 bag.The frozen bottle on bottom with the dry ice surrounded by regualr ice works great as it stops melting as dry ice is negative 109 F. As the reg ice melts the moisture settles on the dry ice giving a smoke of pure co2 that gets blown out the top into the grow area.This small unit with this setup can last 2-3 days at a time 24 hours a day. The bigger the cooler and better can last longer before needing a refill.I then place the lid back on with the fan snuggly fit into its hole.I like to run duct tape around the lid to hold it closed good and tight to prevent any extra melting.You now place it where you want it or run a length of 4 inch hose from the fan pipe to your grow area and plug it in...aaaahhhhh cool air and free co2 to boot.This isnt a full fledge a/c unit but will cool an area or grow box needing to come down.Give it a try and modify it to your needs.Good luck and hope it helps a couple people solve a problem quick..
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