How long can I go without adding more water?

[onestickz]

Sup everybody.
I'm about to run into a real problem and my girls might be at stake.
I will have to go out of town for a few days and i won't be able to check on my girls. One is drinking about a half to a gal a day, and the other is not far behind. Their both in 3.5 gal buckets with a 400 watt hps light thats on for 12/12. All is in a 32"×32"×64" tent.
My question is, how long can they go with me topping off with new water? I don't want then to die, but I have no choice. Nobody knows, so I can ask for help while I'm gone. They both drink a lot of water so I'm worried about them dying while I'm gone.
If anyone can help with this situation I would very much appreciate it. Thanks✌

 

[verticalgrow]

coco = 3 days

soil = 4 days

 

[Emilya Green]

you shouldnt be watering every day anyway... your plants would be much happier with a 3-4 day wet/dry cycle.

 

[onestickz]

I top off the water that the plant has drank. I do that with tap water only. Like I said their taking up a half to a gal a day, so I replace it. I just need to know how long can i go without adding more water. Might be gone for 3 days, so I need to know will my girls be ok? Both are in 3.5 buckets with bubbler system.

 

[Emilya Green]

details help! A bubbler eh? is anything keeping you from sticking a 5gal bucket in there and filling it up instead of trying to go extended days in that 3.5 gal?