Bagseed til my gear gets here!

What's up, new fam!

I have a decent sized room out in a barn to grow in, and I decided to plant some bagseed to get back into the swing of things. I'll be investing in more gear and utilizing more space in the room as I go. I've been getting cursed with shipping times, so this part of the project has gone longer than I thought it would, but that's how it always goes.


I have a 10' x 10' x 7' (~850 cubic feet) room that I mylar'd up Trailer Park Boys style, and threw a few fans in there with the door cracked. I grabbed a 1000w MH/HPS kit and turned it on for a day before considering BBQing with it instead of cultivating. My temps shot up to above 90*f and the plants stalled out for a few days.
I just finished installing 2x 10" 1150cfm inlines for intake and exhaust. They're flex ducted through the room I'm using, about 15' through the main building to the back wall, and routed out the wall to vent caps.




I threw about a dozen seeds I had laying around into some MG in solo cups, and almost killed them all. I realized I wasn't going to have any luck with that lazy plan, so I mixed up some soil for them. Off the top of my head it's something like: 1 part coco coir, 1 part peat moss, 2 parts perlite. I amended it with some fish fert, blood/bone meal, superthrive, a bit of epsom salts, worm castings, and whatever else my stoned ass is missing.

I transplanted them all at once and they LOVE it. I've been feeding them infrequently with some tea I bubbled up from scraps I had laying around. I threw some questionable veggies into an old pair of socks, added in some random amounts of the nutes listed above, a small handful of local topsoil, and equal parts fish fert / blackstrap molasses. I tied the socks off then dropped them in the bottom of the bucket and mashed the hell out of them with a scrap of 4x4. I filled the bucket with water, bubbled for a day until the surface was active with bacteria and then added in some fresh aquarium water.

The ganja and the tomatoes seem to love this foul smelling concoction, so I just bought some local fruits and veggies to do another round.



Here we are a few weeks later, and somehow these (hopefully) ladies have survived my shitty parenting.


I'm just waiting on my ph/tds meters to arrive before I pop my feminized seeds and try to dial my game in.


I have a few questions, and if you've made it this far, hopefully you're invested enough to help me out!


I got my afternoon temps down from the low 90's to the low-mid 80's with both fans running full bore. I was honestly expecting a bigger drop than that, and it's making me dig deeper.
My light has a batwing reflector, and I've hung a fan blowing from one side of it straight towards the exhaust hole. It looks like I'm going to need to get an air-cooled reflector. I found a vivosun model for ~$75. I had some issues with my light kit from them, and their customer service was outstanding, so I'm pretty comfortable going with them for this part.

How much can I expect to lower my temps if I throw a booster on one end of it, and duct it to dump out in front of the exhaust? I'm not expecting hard numbers, just a ballpark.

I plan on building my own led strip setup, but in the mean time I was thinking of throwing another 1000w mh in there once i get my temps under control.

I guess I want to know if I can reasonably expect a vented reflector to reduce my temps enough that I can throw another 1000w vented reflector in there.

I have my exterior vents spaced far enough apart that they're not recirculating from each other, and they're on the side of the building with the least amount of sun.


I've read that I should be exchanging my total volume of air 3x per minute, but that a minimum of 1x per minute wouldn't be detrimental. Is that accurate in your experience?



I got a lot of great advice last time I posted here, and I've been lurking since that post. I can't believe I slept on this place for so long. I love the growery, but time doesn't exist over there!


Pic from a few days ago, before I butchered the tops attempting to FIM.





Edit: Spelling

What did you order?

I haven't ordered the reflector yet, just messaged the seller with a quick question. I'll probably finish that up tomorrow.

Did you mean what nutes and stuff did I order?

Lol yeah, are you gunna run bagseed the whole time as well?

A proper air cooled hood set up right can remove about a 3rd of the heat, but you don't want to be using a booster and you don't want to be venting it in front of your extraction.

If you only have one light then get a good hood and suck through your filter push through your hood straight into ducting and out the building.
Seal all the edges of the duct with tape.

Make sure your thermometer isn't in direct light.

Keep ducting as straight as possible.

Make sure you have several fans to circulate air so its well mixed.

As far as air exchange goes, 99% of online calculators are based on co2 replenishment and not heat, I mean how can there be a simple calculation that doesn't involve the ambient air temp and the total wattage , because that's whats needed to calculate the temp rise from ambient.

As long as your ambient air is not already higher than your desired grow room temp then its just a question of airflow. The more there is the less the temp rises.

Can you link your fans? Tell us the air temp of incoming air?

I'll hit the PC in the morning and get links to the gear I'm using.
I've been putting off ordering the filter, since I'm nowhere near flower.
I'll add to my list. Filter, another inline fan, hood.
The ducting is quite straight, any bends are easy and curved over a wide area so it doesn't restrict flow.
I have 2 elbows on both the intake and exhaust. I'd say about 20' off flex duct, with no dips. The exhaust is hung about 6' high, and I used straps to keep it level and cut distance.
The intake is coming straight from outside the building, about 2' off the ground. All joints and the thru point of the exterior wall were heavily silicone'd, and I taped everything air tight at every joint. The outside temp has been 70-80 during the hottest part of the day lately, but it's going up every few days.
Exhaust is a few feet over, and 3 feet higher than the intake on the exterior wall, so I don't think I'm pulling any hot air back in.
My intake and exhaust inside the grow room are seperated by about 4' vertically, and 6-8' horizontally.
I have a generic box fan, and 2 oscillating fans running 24/7. The box fan is hanging from the ceiling, and is currently pointing past the light directly at the exhaust. One oscillating fan sits on the floor pointing slightly upward, and rotates a bit past the plants on either side. The other one is set at 3' high or so, and is pointed level.
My thermometer was directly in the light. I had it clipped to the inside edge of the middle bucket, thinking that would give me a good temp for that plant, which should be the hottest of the bunch.
Now that you point it out, I'm sure that black-cased thermo was just sucking up heat. I have it clipped on the handle, in a shady spot of that same bucket now.


710Slickxx I'm just using the bagseed to get the room dialed in, and play with some nutes and stuff. I bought a pretty nice selection of feminized seeds. I'm waiting to get the room dialed, and the rest of my stuff (ph pen, some more nutes, ect) to ship so I can do everything right.

I grabbed a few seeds each of: Banana Bomb, Speedy Boom Auto, Super Kush, Blue Ice OG, Critical, Sex Bud, Wonder Woman, Tropicanna Banana, Berry Bomb, and Purple Kush. Some of them are 1 seed promo packs, the rest are 5 packs. I'm probably going to pick two strains that should do well together. I'd like to throw at least one Wonder Woman down, I've heard a lot of great stuff about those ladies.

looks like you are building up to all you can smoke.