Alright
heady, in the words of Jonathan Davis from Korn,
"ARE YOUUUU REAAAADY?!"
Let's get your environment under control!
What are you current average temperatures?
What's your current average humidity?
Could you please post a few more pictures of your tent?
Instead of pics of the plants; let's see how your carbon scrubber and inline fan is setup.
Let's see your vented hood and how you've got that setup.
Let's see your fan you have outside the grow space.
Let's see all the port holes you have in your tent (the openings where you would stick your duct through, usually 4" or 6" circular openings.)
What's the ambient temperature in the space OUTSIDE the tent?
Do you have any active air intakes for the grow space? Or are you just drawing air in from the (looks like three?) passive vents in the tent?
As far as humidity, what have you all tried so far so we can cover what's been done and what hasn't been tried yet? If the decision is made you need a humidifier, there are humidifiers that are pretty small that pump out some moisture; don't think you need some epic monster in there. Combine it with a cost effective humidistat (works like a thermostat, but for humidifiers,) and you can pretty effectively control your humidity levels.
If you're looking to raise it up on the cheap, have you tried the wet towel method? Soak a wet towel in water and stick it in a bucket (some people hang them if they have the space, you look a little cramped in there.) I've personally done this in small grow tent and raised my humidity by nearly 10% for a few days. It's ghetto, but might work if you can't afford the coin for a humidifier.
I've never dealt with gnats on my grow before, but have you checked out the
Hospital / Infirmary for Sick Plants?
I would put a post up in there describing your situation and explaining what you have all tried. Lots of very specific helpful eyes in there when it comes to diagnosing and treating plant symptoms. Would highly recommend trying down there if you have not yet.
Since this has been on-going for you; I'll post this up for my fellow High Team members to try to take a look at too and see if some of them can't comment on your gnat issues.
I know these little nuances can be frustrating, but it sounds like despite them you're doing well with your grow! Let's see some pictures of everything and how the ladies are looking! :wiggle: And get excited, we're going to get this fixed up! :hug: :wiggle:
Here's a little motivational

to keep you going! Get those pictures up and we'll see what we can do! :karma Cloud: