I want to add CO2 injection.

Any of you guys run CO2??

What type of controller do you like, sensor(big bucks), timer(cheapest), temp/humidity(seems the best for the money).

I'll be switching the duct from the lights to the 4in vortex(172cfm), and adding a 6in vortex(449cfm) for air exchange.

I use a powered, filtered intake, it runs in sync with the exhaust.

280 cu.ft. The 6in vortex will give me 3 exchanges for each two mins. running.

Don't be shy.

Lay it on me.

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I'm still putting my CO2 setup together, no real 'controller' yet. I've got a 25lb. tank and regulator. My light(1000w MH) is exhausted by a 4" squirrel cage blower and the room is vented by a 4" inline blower. Circulation is via a Stanley blower fan and a 16" Air King oscillator. Intake is passive, my door is sealed with a door-way-shaped hunk of styrofoam with a gap at the very bottom for air to flow in. Right now I'm using just a 15 minute increment timer, but I intend on going with a full on environmental controller within a harvest or two. I run my CO2 at .3cfh for 45min of every hour, followed by a 15min vent cycle where my exhaust fan comes on. I need to measure my room to figure out volume as I'm not sure what concentration I'm reaching right now. I'm lazy...

This will help, found it looking though tags.
C02 Calculator ~ Calculate how long to run your co2 tank

I'm going to run timers till I can afford to get Growtronix.
Growtronix, Greenhouse Controller and Grow Room Computer Automation System

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I need a dehumidifier, temps are ok, but it gets to wet in there.

please dont get growtronix....too expensive for what its for....

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da fuck?

CHHC-1 Total Environmental Sentinel

or

PNG iGS-220

or

Sentinel EVC-2

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da fuck?

Hard to argue with this.
HorticultureSource.com - Discount Specialty Gardening Supplies - Environmental Controllers, CO2, Fans / Blowers / Ducting & Air Purification - CO2 Generators, Parts & Environmental Controllers - Sentinel: SENTINEL CHHC-1/TOTAL ENVIRONMENTAL CONTROLLE

i thought you'd like that!

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da fuck?

what happened to throwin some seeds into a pot.. and having pot? jk but whomever sad growtronix was too expensive was absolutely right.. not for what your going to use it for!!!

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Rose From The Dirt..... Get it?!