Indoor CO2 controls??

Hey all! Hoping someone can recommend a CO2 controller that controls my exhaust fans as well. I have been told the Titan Apollos are excellent, which I would hope so for the price they charge. I have a tank and have it filled already and the regulator is on its way. Do any of you have an alternative method to automatically disperse CO2 and killing my exhaust fans at the same time? I have been told a few times now that CO2 is only beneficial during veg and have found many contradictory posts along with a controlled test showing how CO2 affected the same plants (1 set grown with CO2 during veg/flower, another tent that used CO2 just during veg, and lastly a tent that just used CO2 during flower) and the results shown barely any difference at all when using CO2 during both cycles and during veg only. The same clones from one strain had been used in all 3 comparisons along with identical light/temp/nutes etc. I'm sure it could have been just that specific variety but I don't know and hope someone out there can help me along with this. Anyway any help or direction on how I can expedite CO2 dispersal automatically, if a $500+ system is the best option then I will go that route, I have no problem spending the money on quality products that are going to provide me with years of use with as little maintenance as possible.

Thanks in advance!

Why not just put them both on an analog timer? You can use this calculator to find out how long and at what output to leave on the CO2 regulator. http://www.hydroponics.net/learn/co2_calculator.asp

2 Analog timers will cost you maybe 20-30 bucks, get the 15 min increment ones http://www.hydroponics.net/i/135917

So as an example, if your room is 4x4x6 (96 cubic feet) using a .5 Cubic Feet Per Hour regulator, the regulator must be open for 13.8 minutes.
So sync the timers up so the exhaust goes off, co2 starts flowing, co2 stops flowing, wait an hour (or however long you can leave the exhaust off without causing too high temps or humidity) exhaust for 30 min - 1 hr, repeat.

A little math saving a couple hundred bucks = worth it (imo)

Screw CO2. Spend that money on lights and see a far bigger difference.

Jumokee said:

Why not just put them both on an analog timer? You can use this calculator to find out how long and at what output to leave on the CO2 regulator. http://www.hydroponics.net/learn/co2_calculator.asp

2 Analog timers will cost you maybe 20-30 bucks, get the 15 min increment ones http://www.hydroponics.net/i/135917

So as an example, if your room is 4x4x6 (96 cubic feet) using a .5 Cubic Feet Per Hour regulator, the regulator must be open for 13.8 minutes.
So sync the timers up so the exhaust goes off, co2 starts flowing, co2 stops flowing, wait an hour (or however long you can leave the exhaust off without causing too high temps or humidity) exhaust for 30 min - 1 hr, repeat.

A little math saving a couple hundred bucks = worth it (imo)

Click to expand...

Fantastic! I did all the math and will begin testing over the weekend to see how long my inline fans can stay off before temps get too high. I currently run 77 degrees during light on and 72 lights off. The flower tent is just under 10 feet long and almost 5 feet wide. I run 3 600W HPS with a 6 inch can max connected to the airflow lighting another 6 inch connected to a 2 foot carbon filter and another 6 inch connected to a timer with a temp gauge that I have set to go off at 80 degrees in case another fan fails or the two current fans can't keep up with the temps.

But again I'm just not sure if going with CO2 just during veg is the way to go or not?? The ROI has to be there unless it won't be worth costs and time filling tanks. If someone can please direct me on this, CO2 during both veg and flower or CO2 just during veg? I have a 5x5 veg tent with a 400W MH in an air cooled hood with a carbon filter running off one 6 inch inline fan and Temp and RH are always in the 73-77 range and of course it would be much less costly to raise the CO2 PPM's to 1200-1500 in the 5x5 vs. 10x5! Any help is appreciated.

hotrodharley said:

Screw CO2. Spend that money on lights and see a far bigger difference.

Click to expand...

Thanks. I figure I have the equipment (extra timer, full tank, regulator) and got it for pennies on the dollar from a grower who retired for the time being and had to move all his equipment out for dirt cheap and do it with in a week so for $20 for the full tank CO2, the hose, 5 diff timers and two 12 gauge 25 foot extension cords I couldn't say no!!! Also, I run 1800 watts in flower now and 400 in veg and don't want to add further heat by increasing lighting at this point. Thanks

Figured I'd see if someone can lend any advice on the above question, should I be running CO2 in both veg and flower or just veg? It's a perpetual grow by the way so there is always 2-3 plants in their last cpl weeks of flowering (I flush 2-3 times depending on the plants trichs). Temps this time of year are running at 72-74 degrees during lights on and 60-63 degrees during lights out. I'm using CO2 during flower now and I have several varietals that turn anywhere from fully purple to lighter shades of blue and purple which never happened with these same varietals during the warmer months. After some research I have a feeling it's the temperatures (and of course in the genetics) causing the change in color not the use of CO2 but am open to any information fellow ROI's can offer.
Thanks

Could anyone offer an opinion on my last post?

flower only bro. Some claim benefits to running in veg. The ONLY reason it would be beneficial in veg is if you run a super sealed veg room with no air exchange ever.