What Size Humidifier?

I have a 1x1x2 metre tent, how big a dehumidifier would I need? Humidity is around 50-70%, and it's my flowering tent.
There are cheap ones I've found that take out 250ml/half pint in 24hrs, and more expensive that do about 6-8 litres..Is taking out 250 ml a day enough? I bloody hope so, because there's some difference between the two and I can't throw more money into the grow...but I will!

I think you mean dehumidifier...
The difference between the models you describe is huge... Your tent probably requires the smaller dehumidifier, although half a pint is one cup .. and that is a very small dehumidifier.. Is there not some in between?

I don't think there is one inbetween.

I bought the super cheapy ($65 on amazon) and supposedly it takes out a quart a day or something, I only use it at night.

It brought my humidity from 80% at night down to mid 60s but hits 70 still sometimes. =(

Yeh, De humidifier (the amount of times I've typed it in the hour! )
I guess a more sensible question (whilst I'm doing a sensible postr ) would be "How much water am I looking to remove in 24hrs to bring the humidity down?"
Though it has just occurred to me; if I'm topping up a bubbler with 2 litres of water a day, then she must be transpiring that amount a day? Or at least that should be some sort of a guide...

That is exactly what is going in the air.. unless you are venting, too.. then some escapes...

But yeah, any top off amount is precisely what came through the plant..

Not all of it, most is taken up by the plant. It all depends on the size of your room man, I'm in a walk in closet and this dehumidifier says perfect for closets and bathrooms lol

Cheers everyone, I've checked it out a bit more. I think the smaller ones would certainly help, but all the reviews I've seen have been negative about the noise...and they're not even secretly growing herbage!
I'm going to up my air extraction, see if that helps. Otherwise, I guess I'll have to chuck money at bigger dehumidifier.