Ona Gel/HEPA/Carbon Scrubber for Apartment Grow

Bucket head said:

get a carbon filter all this other stuff sucks. With the amount of time and money you would spend you could have just bought a real carbon filter.
If your gonna grow don't half ass it. Best money i spent on my grow was my carbon filter.

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i hear that. i got a 6 inch gro brite from htg for like 79 and a fan filter combo for 60 off ebay. They both work real well and when i come home to my apt i thang god i got no smell. It gets bad. part of the sport. odor control

I built my carbon filter DIY with duct tape

Hey Thundercat...

My carbon filter is three years old, it still works great, It's massive...

I do rinse it out once a year, and it's still working great.

I figured it would work better if I rinsed it out with some plain water, I used to re-use the activitated carbon for my aquarium, so I figured it would work, and it did. Whenever I notice the filter isn't working so great, I give it a good hose down, I've rinsed it 3 times, and it still works great...

I forget what the model # is, but is weighs 120 pounds, it's almost 5 feet tall and has a 10 inch inlet... And a 1000CFM fan.

Lol MrHoward that is a bit bigger then I'm gonna need. My whole tent is 8'x5'x6', my light doesn't currently have an flange for air cooling, but it does have a spot for glass. So I'm going to put in a piece of glass, and add a flange to one end of my hood. This will draw air outof the light, and out of the room through the vents in the hood. Thats why it would make it hard to add a carbon filter. I would have to run a second exhuast to do it I think, unless you guys know of an inline filter I could add before the fan or after it.

On the idea of making a DIY carbon filter, do you think it would work to make a canister that fit inline for my exhaust, that I could then just fill with the activated carbon. Put a piece of air filter at both ends of the canister to hold in the carbon?

I use a carbon filter in my wardrobe, works great. If I have to replace it every 3 grows, well that is the price of growing - cheap if you ask me.

I use the Ona odor control machine in my house just to freshen my air in general. Odors from a litter box, cooking odors, etc - none of that Ona smell gets to my plants at all. And Ona DOES NOT just cover-up odors - it chemically eliminates them.

It might chemically eliminate them, but it also smells like a public restroom... Which is a cover up.

Yeah, I have my filter sitting next to the furnace and water heater, it fits in perfectly, they're all about the same size...

I think I'm still gonna try out the ona system, but I was kinda hoping some body might be able to fill me in on the damage caused by the o3? I'm really interested in learning about this, since I was planning on useing this machine. Its designed to be used in a residential home setting. I am going to DIY an inline carbon filter as well though. You guys have got me thinking, and I'm pretty sure how I'm gonna do it.

The thing about the DIY carbon filters is the carbon isn't packed nearly as tight as when you purchase one, plus activated carbon is fairly expensive to begin with. One you purchase will work much better than one you make, not saying the DIY doesn't work, it just doesn't work as well.



Ozone generators starve your plants of co2, and oversupplies them with o3... Excess oxygen for humans can cause euphoria. Ozone itself (o3) has a donor atom that will break off as quicly as possible and attach to another element to convert to normal oxygen. (O2) whatever is in the air can quickly become an oxide, like carbon, can become carbon monoxide... Nitrogen, nirtous oxide... Etc. That's my basic understanding of chemistry.

hmmm, I think I see what your saying. I was planning on trying to run co2 as well, so maybe I'll use that purifier out side the tent, to control any escaping smell.

I don't really have a problem with buying a carbon filter, I just havn't found one that will work with how I'm cooling my lights. I need a filter that will fit inline, and that will filter inline, not draw from outside. I want all my exhaust to flow up through my hood, and out the exhaust tube. Could I put the carbon filter after my fan, and blow the air out through it?

That's what I do... The last place my hood vented air goes is through the carbon filter.

I have all 6 of my hoods hooked together with ducts, that go to a powerful ass vortex fan, which sits on top of the carbon filter, blowing air into it, not sucking air through... It's the exact opposite of how most people use it...

Another solution is to put the ozone generator within the ductwork, inside the duct, and the air will get ozone as it exhausts from the room...

Thank you very much MrHoward! I'm glad to hear I can make this work. I'll just spring for the carbon filter, and run the purifier right outside my tent. You think a 400 cfm will be a big enough fan for a room thats 8x5x6? I want to keep the hot air out, but I was hoping to run co2, so I don't want to pull all of it out of the room. I was thinking about plumbing the co2 with tubes, so it is released right at the base of the plant, and then if it does get exhausted out, it is pulled up through the plants. What do you think?

It should work alright, I'm running near 1000CFM on 6 hoods, and not having any problems, If the ratios work, a 400CFM should be able to cool 3 600W hoods... I think.

i highly recommend an ozone generator with proper ventilation or a carbon scrubber, ona gel in your grow room can actually screw up your plants and make the bud taste and smell like shitty ona gel

I'm only gonna be running 1 1000w light, so I figured that 400 would be more then enough, I'd go smaller, if it wouldn't cause a problem, but I also want to make sure its enough. I'm counting on this to keep my tent cool. Last time that 1000w was hot in the room I had it in, it was also summer and I didn't have AC. This time I'm growing in a basment and it stays about 65 since we moved in(in OCT.) So I think this should work out well. I would think if I need to warm it up,I can even put the fan on a timer.

Yeah man 65 is a bit too cold, at least for co2... Optimal temps are 83-85 degrees.

Also, co2 works by moving over the surface of the leaves, so putting the hose on a recirculating fan works good enough. Another thing is that co2 is heavy so it sinks to the floor, don't put it at the base of them.

I figured if the exhaust was pulling upwards that it would pull the co2 aswell. I know 65 is a bit cold, but I'm sure I will get heat off the light, and all I'd ave to do is put it on a timer to let it heat up more. But I'm sure it will be plenty hot once spring comes around, and I would rather have to heat it up now (remove glass) then have to cool it down later, cus I have no where for an AC. I thought that like 75 was pretty much the ideal temp for the majority of strains?

u should look into a febreze true air i put a bag of dank in my gbox and left it thier till it stank up and turned the tru air on and cleared it out in about 3-4 mins i had 2 stick my nose down into the bag 2 smell anything thier was almost no scent 2 the box at all

Yeah thundercat, when you're using co2 the ideal temp is 83-85, this allows the pores on the leaves absorb the co2.

I see about the pores. Thanks for all the education MrHoward! If I need it to be warmer, during the winter I'll do what I said, and either put the fan on a timer, or leave the glass off. Prolly use the timer, so that the co2 doesn't get sucked out of the room. I might be able to invest into a temp controlled timer. Do you have any idea on a good one, or how to rig one up. I figured I could set it to turn on the fan when the temp reached 85, and to turn off when it reaches 80 maybe.