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There will only be 12 for the first 3 weeks. After that preflowers should reveal the males and I'll picky any unhealthy females out. My room is 11.5L 9.5W 10H. I'm putting them in a donut vert setup with 2 1000w HPS's hanging in the middle.

Ah I see, then you just gotta measure out per plant from the water butt, I'm guessing? What size container do you feel would be good for 12 plants (12 before preflower, selecting 6 for flower) in 8 gallon buckets? I'm growing pure sativas so they'll get big

I'm trying to plan ahead before my first grow and I've got a simple question. I'm wondering how I should be mixing up my food with my water. I'll be growing 12 pure sativas (6 after preflower) in 8 gallon buckets since they'll get pretty big with a 14 week flower (no veg). Would I do it all in...

okay, thank you

​anyone???

For my first grow, I will be using 12/12 straight from the get go since I'm growing a pure sativa (seed's website says max of 10 days of indoor veg). I was wondering two things: -When will the plants start to show sex since the plants are only in 12/12? (3 weeks?) -Since there isn't a set veg...

okay I was just asking because I'll be using $120 worth of soil just to throw out $60 worth, but all good. I guess I only have to do this when I'm starting from regular seeds anyways. thanks again

Thanks. My only other questions is this: for the plants that you pull, can you save their soil for another grow (since it only grew veg state in soil before being pulled)?

the seeds I'm going with (high grade seeds malawi gold) aren't feminized, so I'll be going with just regular seeds. I'll plant all 12 in hopes of getting at least 6 healthy, females.

I'm trying to understand how many seeds I should plant once I am ready to grow. I want to be able to choose 6 healthy, females once veg is nearly done. If I planted 12 seeds, would that be enough? That would mean I get to pull up to 6 male or unhealthy plants before I get my 6 healthy girls...

I will. Decided I'm gonna run hard piping instead of flex too so it should be good. thanks

I had it that way originally but I've had a lot of people tell me you normally want to suck air through the filter, not push it thru

gotchya. last question- so about the intake situation: I understand you're saying the small fan below the lower bulb would disrupt the intake air from getting to the other side of the room. Should I make two vents or would this be inefficient? I want to keep the small fan under the light in...

okay. changed my design around little, got some advice from a guy who has years of HVAC experience:

I understand completely but the exhaust needs to get into the ceiling or right near the ceiling, so if I don't do a 90 degree angle at the takeoff for the light, I have to do it later (maybe after the fan). got a few questions: 1. How high from the light should the ducting begin? (if I should...

ok I understand the drawing, but what are the benefits of having a cap 2 ft after takeoff & having the scrubber come after the ducting?

yep, definitely have the room. I added your comments to the diagram, thanks no topper but I topped them just for you I switched up, no more cool tubes, 1 big fan, scrubber first. still need to decide whether to keep scrubber closer to lights to suck hot air right away or put scrubber up higher...

yeah I misunderstood at first, I made another because I switched up my plans entirely to a vert grow in this thread: https://www.rollitup.org/grow-room-design-setup/649400-what-do-you-think.html

I just finished building my grow room. I'm trying to design how ventilation for my donut vert grow. what do you think? Two different designs, the second one is with jrainman's suggestions (two takeoffs w/ no small bottom fan):

I'm gonna be going with 2 1000w HPS's. Do you recommend using cool tubing? Or could I just hook up bare bulbs (shown below)?