Out of town for a month. What to do with plants?

I am leaving town for three weeks. Found someone to watch my dog, but having a problem finding somewhere to care for my plants. What is the most effective way to water my plants while I am away for three weeks?

I am not opposed to building my own setup if necessary.

Thanks

this is a hard one without more info on your grow. a month is a hell of a long time to leave everything on auto as well.
Only thing that comes to mind is a timed drip system and just hope your res doesnt go dry.
My best advice is to find a "dog" sitter that can water your girls too.
How far into it are you? maybe just give up this round and start over if your not to far into flower. i wouldnt think twice about just letting some vegging plants or even up to maybe week 2 of flower just die if i had to.
You could also cancle your trip.

Hawaii for first Christmas with my bf's parents. They paid for the ticket, can't cancel. Two have yielded a previous Strawberry Cough crop,then we have their clones and 4 new Headband plants. We haven't flowered at all yet. Still vegging all, including mother plants. New crop for all except 2 mother Strawberry Coughs.

I've found people who are willing to house/plant/dog--sit, but when they found out we don't have a TV, they bail. I've even offered my snowboarding gear and my lift pass. : /

the only problem I've had so far are fungus gnats. First crop was a great success.

Setup an auto watering unit like the one found in the DIY section. Raise the lights to give enough room for growth. Maybe even set up a safety screen.

If you can get the auto drip system dialed out before you leave then it should last the trip no problem. To get someone to come check on them would be better though. Safer too. Although really, weather your there or not if something is going to go wrong its most likely when your not watching it and able to react anyway.

oooohhhh! Thanks for the tip! The mothers are so pretty, i'd hate to lose them! gonna go check out that DIY section

the headband plants are growing super fast and TALL

Anybody you can trust. My brother went to the Philippines and the owner of our grow store handled it for him.