Before this gets into another pi$$ing contest, you should know each person is running a different strain. Some are awesome producers and some not so. Take this into account before commenting on how well or poorly someone elses grow is doin', jmtc
Who said fresh air is better than co2?Must have missed that or I'd jump all over it haha.People dont use co2 enrichment because its not as effective as exchanging air,you can believe that.I get 2 lbs per 1K hortilux with blockhead which is pretty much a medium/medium-heavy yielder depending on pheno.He's right though everyone is growing different strains so comparison means little.Hell different pheno's within the same strain may yield quite differently.Dont ever believe that exchanging fresh air is as or more effective at producing desirable results than co2 enrichment done correctly.Its not even a contest since its not close
no lie bro sealed room 6k watts 9 plants per light in promix 5 gal pots advanced nutirents 5 ton ac. Plants are vegged for three weeks under 1k watt hps. I know it sounds high but i average 2+ every time. and i consider perpetual beacuse i veg three weeks in my other room as im finishing flower. ecsd clone and snow dog. if your telling him fresh air then your not in a sealed room. Only way to get 2+ per light is in a sealed room controlled enviorment high co2 perfect humidiy and temp.
If its grown commercial i notice most guys dry about 3 to 5 days then its off to market. Often the bud is stilll wet enough to mold but they hate the weight loss so they sell early. They may loose another 25 to 35% if they dried all the way.
I bought some RAE systems co2 cartridge testers for 5 bucks apiece and couldnt believe my PPM readings at different times of the day,it was way off.According to the formula I should have been at 1500PPM but I found myself all over the place at different times of day.With the controller I set it to 1500PPM and it fluctuates from 1450PPM to about 1600PPM and always stays within that range which is totally necessary for any positive results
Dude! Where did you get this tester from? Tried Googling it but couldn't find anything. Sounds like exactly what i need! Is it like a hobby shop thing or something?
Google rae systems co2 tester and in the middle of the page you see co2 tester.Its important to take a full two minutes slowly pushing the air through the syringe.I just rest it on my knee and put a tiny bit of pressure on the plunger.Pushing it through too fast will give a false reading
Google rae systems co2 tester and in the middle of the page you see co2 tester.Its important to take a full two minutes slowly pushing the air through the syringe.I just rest it on my knee and put a tiny bit of pressure on the plunger.Pushing it through too fast will give a false reading
Awesome thanks I see it now. I wonder if this method of testing would be effective for carrying tests in a cab. I have 3 cabs that I'd like to check the levels of that I'm running tanks to. All of them run through a regulator and a timer and are sealed completely. The cabs are the BCNL Producers (click here for more info) and BCNL claims that they have tested out the levels to ensure 1600 PPM levels.
Quote from manual, "The Producer features the ultimate easy to use CO2 injection system The use of CO2 will dramatically increase the
production of your plants. CO2 is programmed to inject automatically throughout the day to maintain a constant
CO2 level of 1600 PPM."
I just want to double check to see if they really are at the 1600 since after reading this thread and this one I'm having my doubts.
Since you've used this before do you think it would be effective for my purposes? I guess I would have to open the cab doors to really get in there and measure for the syringe for a full 2 minutes which may cause the levels of co2 to leak out and dissipate, ya?
No just open the cab door stick the syringe in and draw back,the whole thing should take about 5 seconds.When you insert the tube to push through the air,you want to take two minutes for that.
Perfect! Thanks for the clarification, ordering now!
Also, BCNL suggests for some reason not to use co2 until after the second wk of flowering and only after the roots are well established and the plant is looking healthy. In fact, they even go as far as to put this information in a warning box inside trhe manual
I can understand the, "not until plants look healthy and have established rooting system developped" part however, what would be the reason if any that they would suggest waiting til after the 2nd wk of flowering to start with the co2?
Anyone?
I plan on calling them up on Monday but from experience I noticed that their support staff do not always have the answers to detailed questions they only follow instructions so I post it here as well....
I don't know who BCNL is but that is ridiculously wrong.I dont know what they are growing.The first 3-4 weeks of 12/12 is when the plant stretches and grows most vigorously.A lot of nitrogen with shots of phosphorous starting after 2nd week 12/12.After 4 weeks 12/12 use phosphorous fert.The plants are still vegging a few weeks after the switch so nitrogen not phosphorous is whats needed most for 3-4 weeks
Ok thanks for that input. I should have clarified that BCNL is BC Northern Lights, They are the makers of teh hydroponics grow cabinets and they make them especially for cannabis. I'll be sure to bring that up and any other things you mention on Monday with them over teh phone to their support line. I happen to know however that a few of them are in Amsterdam for the HT Cannabis Cup right now but should hopefully be able to get some answers...
I dont care who they are or where they're from man,if you are using co2 enrichment and use normal levels when the plants are stretching you are wrong.I'd like to hear what these apparent idiots have to say about it.
I dont care who they are or where they're from man,if you are using co2 enrichment and use normal levels when the plants are stretching you are wrong.I'd like to hear what these apparent idiots have to say about it.
But wait, maybe I'm just reading this wrong but it looks likeyour saying that I'm wrong if I'm using co2 enrichment and using normal levels when the plants are stretching? I thought that is what you were recommending that I do indeed use the co2 enrichment at beginning of flower, no?
