What size grow tent?

Would I need for 3 Auto flowers grown under a 250hps cool tube? This might be to direct of a question sense you cant really tell how big the plants will get but just let me know what you think. Rep to all!

id say with a light that small 4x4 tent not sure if they make them smaller since i build my own tents ....but that should be good for 3 plants

aoR Monday said:

Would I need for 3 Auto flowers grown under a 250hps cool tube? This might be to direct of a question sense you cant really tell how big the plants will get but just let me know what you think. Rep to all!

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You can go smaller with a 250 watt but I would'nt. Atleast 4x4 and plan for your next grow. Those autos will dig your 250watt setup and when you go photoperiod grow you have a little room. You might want more light when you do that.

a 250w will have trouble covering even 3X3
you can take the 4X4 if you feel like extra space for shit (you can even go inside if you're not big), but mind you it's a big ass tent

Rep to all
So your all thinking I should use my 400w hps? hpw much would it cost to run 20 hours a day?

i would go with the 4x4 tent because you will want the extra space after a few grows, the cost depends on you electric cost per kilowatt, mine is 13pence so for every 2 and a half hours the 400 is on it cost about 13p, so about 94p a day for 18 hours on, 12 hours is about 65p, you can run a 600 for the same price 12/12 as the 400 costs for 18 hours, so taken that into account if you veg with the 400 when you switch to flower you can put the 600 on for no extra cost.

Oh okay Well I calculated it and its 80 bucks to have my 400w hps on 20 hours a day for a month. here is another question. when i get a grow tent im going to have a 6in inlin fan connected to my 400w hps cooltube venting out of the tent. Do I need another fan venting into the tent?

aoR Monday said:

Oh okay Well I calculated it and its 80 bucks to have my 400w hps on 20 hours a day for a month. here is another question. when i get a grow tent im going to have a 6in inlin fan connected to my 400w hps cooltube venting out of the tent. Do I need another fan venting into the tent?

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no just use a passive intake, your tent will have vents along the bottom so when your fan is sucking the air out the tent new fresh air will be sucked in through these flaps.