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High CO2 at night can harm plants and turn them yellow.

Do you guys use two nets or one? Anyone do a SOG style like the commercial big dogs?

SWIM is having issues with cloning in DIY bubbler after giving up on aeroponics -- I think some of the collars may be too tight for the stems. Grr... any ideas?

In a 20 pound CO2 tank there is 175 cu feet of gas. At 1000 PPM in a 5x5 grow tent would fill the fent 1750 times -- even if you filled your tent 10 days per day, calculations say it would last more than 5 months per tank

Why do folks mess around with yeast and baking soda for CO2 production. They do not produce enough CO2 to make a measurable difference. Just something to waste money on...

SWIM is set up for 2 plants per sq foot in DWC and CO2 injection. Figuring they should be 10-12 inches in height before the flip. Slightly bushed but main cola only.

I wonder why more people don't run SOG like the commercial growers

@Uncle ted22 Six tanks in 25 days?! $162 in gas not even half way thru flower yet? Are you guys using sealed tents!? I cannot understand how some burn through 20 pounds of CO2 in days...?!

No one needs CO2 injection anymore than they need efficient lighting. My understanding is that it helps achieve greater efficiency

This will be SWIM first run with CO2 injection, with many grows without in the past. I'm paraphrasing Ed Rosenthal here, but essentially CO2 injection is not about growing more, it's about growing more efficient. You can buy the most expensive and highest PPFD LED grow light on the market, but...

It depends. If you aren't using CO2 injection then you want frequent circulation and you want to bring fresh air into your tent and remove the stale air as far away as possible (outside is best if you're able). However, if you are using CO2 injection that you want your tent to be completely...

Are you using CO2? It wasn't clear above -- when you mention CO2 are you supplementing with tanks or are you referring to the ambient CO2 in your air?

@Tstat SWIM had to participate in a 4 hour training with exam in order to assist patients in certifying them in SWIM's state medical MJ program for medical provider recommendation. The program participated in was Thomas Jefferson University's Lambert Center for the study of medical cannabis...

Ugh... SWIM is skipping their workout this morning. Lugging 3 x 20 lb CO2 tanks to be filled (not as bad) and then carrying them back home (bad!). If anyone is considering a 35 lb tank or 50 lb CO2 tank... JUST STOP IT! A 20 lb tank sounds light... but it's really 25 lb's with the...

They sell that stuff at tanning salons in this area. I've heard gas stations are next. Ugh... watch out

HLG 96 Elite V2 or HLG 324 V2 -- both under $100 for board and sink -- add a driver and you'll be around $150

I'd go with alternating HLG QB96 V2 Elites and HLG QB324 V2's -- each under $100. These will not cost you $1000 per light -- far from it. If necessary maybe add two or four HPS if you desire if you're able to put in aircooled tubes. In a space that size you're bound to have heat issues with...

What does everyone think about the second SCROG net? I see many people doing this. I wonder if this is necessary if you're doing a bit of a SOG / SCROG combo with a higher quantity of smaller plants (ie: 1 plant for every 1 sq of space). I also see people using one SCROG net with the yoyo...

Any thoughts on a combination scrog and LST?

I think you have this posted twice in different thread categories on here. One should be enough.