Please Help Me Mod My Crane Digital Humidifier RIU.... Any Suggestion Appreciated!!!

So the scenario is that the room I have my flowering tent and veg cab in runs in the 20 to 30% humidity range almost all year long and I prefer the room to be in the 40 to 60% range. 45 to 55% is what I like and never over 65% which messes with my filter system and so I use a humidifier in my flowering tent and at this time I'm using a Crane Model Ee-8064, (Link goes to Amazon). The problem is it's wearing thin waking up every morning to make sure this suckers still full and running, so I was wondering if any of the RIU Grow Room section contributors has any advice on what I could get away with as in adding an external tank. I'd like to avoid using a pump, and was thinking of just drilling a hole in the tank and adding a line connected to a bucket suspended above the humidifier but I get the feeling I might really screw up the way it works, i.e extra water pressure from the mod in the system or something like that. I'm not married to this device. I got it in a shipping mix up, but it works very, very well and I also use it in the summer with a fan to cool off the grow area, sort of like that machine the NFL uses on those hot game-days in Arizona for example, which is also why I keep it in the tent. So the desire to keep using it is there, but the desire to go away for a few days without worrying about coming home to a desert is there too. So what would you folks do if you wanted to mod this humidifier for getting more water capacity than it's 1.2 gallons? Any advice?

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Thanks and Happy Growing RIU!

Thanks Coho I'm thinking the same thing. It's got a valve so I guess it's just finding the right height and gauge of hose.