Humidty ???????

getting ready to grow in my outbuilding idont know how to controll the humidty when it gets real hot outside, im going to use a grw tent, and im going to use leds for lights ,,,,,,,, help me help me

????? Is it high or low? Heat might be a bigger problem. But we don't know anything to give any advice. Sorry. Add more info

To raise humidity simply put a wet towel or rag in your grow space. You can also leave a cup or container of water as well. This will result in evaporation and will raise the humidity. If you have the funds, buy a hygrometer to measure the humidity. My thermometer has one built in. Hope this helps.

You're going to have a lot of trouble doing it in a shed.

increase humidity by inserting a clay pot into 1/2 bucket of water. the clay will wick moisture up to evaporate.

An outbuilding is a problem. I agree heat might be a bigger issue than humidity.

first you need to go to lowes get some foil backed insulation and istall it. if there isnt a loft you will need to build one with a duct flue thru roof(if any asks say its a water heater)insulate that too. then you want to staple gun white poly to the walls and seal it up with metal duct tape and you should be good to go throw a 600 hps and 400 mh in that bitch with a 8 in inline and a 500 cfm filter

you need to seperate room from outside environment. foil back needs to fac out wards to repel suns heat it will still block ir. leds are not worth it unless you are doing at least 300w+

now if you built a small shed with fine black mesh screen as walls and only a wood roof about 5 ft above it you could use led as supplement to sunlight and save on ventilation and lighting all together

you need to put some more info mate. so we can give you more detailed answers....first of all dont be worried to much about humidity. increasing or decreasing it. its all simlple and can be done cheap. i use a 20 qiud humidifier and can control my humididty to what ever i like. at the minute its sat at 45 percent(3 week of flower) are you putiing a tent inside youre outbuilding and what seize are these. pics would be great.......ok i can let you know a few problems you might have to deal with. a very close friend did what you are doing. first heat was a killer. so he needed to run intakes. through brick walls. a lot of work nose attention been drawn to him self. then the electric. started with a generator. forget that. if sound is a issue.(siute case generators are not as bad for sound but cost a few qiud) then he tried wires from the house had to change connections on all is extensions ect to be able to be run through them yellow junction boxes the use on building sites. this was impractical as visitors could see this. so he had to run the wiring under the concrete to the outhouse. this is all added cost and time. but gets better yet. he hand feeds 10 plants. so instead of moving 20 litres of water to an out house every day or so drawing attentions to himself again. installed a tap not to far from the out house. wich room was a problem when trying to fit room for all this water to sit over night.then the bugs or ye. i never seen such a big ladybird sanctuary. honestly he had to keep them as pets just to keep some order in the out house. but ended up buying things from neem to pesticides. more cost.. and lost crops.. also one year he got snowed out and couldn't get in lol. i could go on and on here. honestly mate i could. in the end we added up the extra cost and were shocked by how much money time plants got wasted. ye he had some real nice cheese crops. or wich he had to clone over and over to be more heat tolerant . get there in the end. he now as put a 1/4 of the money into a proper well dialed in op and 4 1/4 the money think about it mate i wouldn't wish the stress he whent through on anyone