Hey OG,
I have the carbon filter zip tied to the top back rail of the tent, the fan is sucking air through that and then pushing the air through the lights and then back out the top where I have duct to the attic. Nothing is low except for the fans to circulate air.
Where is your intake located? I have my filter/fan up high like you, but I have the cool air intake low near the bottom of the tent, opposite corner from the fan/filter. I just open one of the lower port holes opposite of the filter down low. Cool air is pulled through this open vent passively, and from the bottom up to the filter/fan. The cool intake air passes over the canopy as it comes in. I feel like this is the ideal way if you can make something like that happen... OG was right about cooler air down low. Stratification makes a big difference in temps so your air near the ground is much cooler than the air near the top.
Yes Bass, that's a 4x8 tent. I got it off fleabay for 190 shipped! Pretty nice setup. I can give you the link in a PM if ya like. You can see some light coming out of the tent through the zippers but it's not bad. Won't affect the grow at all.
Lights are very nice but they weren't air tight. Had to use some duct tape to get them air tight.
Yeah, airtight is something they're not, alright. I used 2 layers of painters tape (for easy removal) to seal them last time, and it helped a lot. My lights are on their own fan, though, and yesterday I added a filter to the exhaust to take care of any odors that leak through the hoods. Hopefully that'll do it this time.
Good God, could I possible run into any more trouble.
The lights on my NEW controller do not work and the fill pump stays running even when the res is empty. UGHHHHHHHHHHHHHHHHH !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Is the pump really still running, or is the water just still pumping/flowing? I ask, because it would be possible that you have a siphon issue (remember our discussion about the small hole in the fitting?) Maybe you've confirmed it's not that, but that's the behavior if that hole is missing or covered.
When you say it keeps running after the res is empty... Do you have enough water in the reservoir? Or, are the buckets being overflooded? If the buckets aren't being overflooded, you'll need to have more water in your reservoir, they won't stop just because it's empty, they stop when the buckets are flooded to capacity.
One other tip/note: I noticed (fortunately right away) that if I unplug something besides the main plug on the Flo N Gro, and plug it back in, the system doesn't operate (at least correctly). The fix is simple - unplug and replug the main plug in after everything else is plugged back in - seems to reset it. BUT, good thing to know in case it ever comes up for you. Now, I always unplug the main plug if anything at all. Speaking of which, are your pumps plugged into the controller bucket properly?
Bummer you've had some issues, but it sounds like you're getting them worked out. Better now than trying to do this with plants in there...
Sorry if some of this makes you go, "Of course I did that!" but it's difficult not seeing things in person or not being there, and I'd like to help/provide insight if I can...