>>2328819>>pain in the ass to fillEither fill it with a handpump filter, or fill it with a mug or your cookpot if you're just going to Aqua Mira into it.
>>pain in the ass to cleanOnce the hike is over, it's not that hard. They make brushes for the tube, and you only have to use dish soap to clean it. While on your hike, you can put Aqua Mira or other chemical water treatment into it each time you refill it (even if you use a filter too), which will sterilize it as you use it.
>>hose freezesI don't recommend them in freezing conditions.
>>leaksShitsux. I once turned over in my tent on one where the lid flexed and leaked water under my sleeping bad as I laid on it. It's rare, but try to store it in a way that this won't wet your gear.
>>or take it out to fill it, then shoving a formless bag of water into a tightly packed backpackLike I said above, use your mug or cookpot to dip in the creek to fill it and then it won't be wet. These bladders should also always be stored inside your pack, *on top of* everything else in your pack. Those built-in sleeves are a bad idea even in ideal conditions because it can (and usually does) get pinched.
>>2328868So you need to carry a bottle in addition to the bladder, which is supposed to replace the bottle.
>>2328829>That's not really that much to drink over the course of a seven hour session of physical activity. Nothing would happen, other than you stopping every fifteen minutes to piss clear water right back out.You drank almost 2.5 gallons of water over a 7 hour period of time. Was it over 100 degrees outside? That really is a lot of hydration. I don't think most people are able to give themselves water poisoning (yes, it is real) unless they are taking some sort of weird drugs like ecstasy, but you may have some underlying health problem that is causing you to be this thirsty.
https://www.healthline.com/health/diabetes/diabetes-thirst 
