How to prevent humidity spikes during dark periods

Hey! Just checked out your photos.. those little dehumidifiers don't do jack! I've had up to three in the tent and nothing.. I suggest you get rid of those, sell them, give them away whatever.. and buy yourself a decent dehumidifier that can get the job done with just one, look for a bigger with more capacity and watts. Other things you can do to control humidity is increase ventilation. That being adding more fans, stronger intake or extraction also helps. Don't water too much, don't leave water in the trays.. make sure there's the least trace of water behind as possible. Hope this helped. Good luck and happy growing!