[shishkaboy]

I changed up my whole set up because of this thread.

This is the #1 source for coco growing info I have found yet. I just copied as much as I could.

I learned a lot about how to properly set up a room. I was skeptical at first but the way it was explained here made so much sense as soon as I heard something similar from a reputable source, I was all over it.

I have way more control over the things that I can control now.

One of the major points I liked was we shouldn't be going below 65% rh (depending on...) but for the most part if we wouldn't want the drying process to get below 65 we should strive to keep it at least at that point.

I heard a very similar theory regarding temps. I listened to a wonderful lesson on drying and curing from the Wonderland nursery director and learned that 82 deg should be the upper temperature limit due to that being the point where we start to "burn" the terps.

It makes a lot of sense to me and was wondering, how do some of you all with controllers balance out your temps vs rh?

Big ups to DJM and the whole crew.

[stoney917]

Well my setup ain't perfect but I got a controller that I plug my Co2burner, dehuey, 2 back up acs on... the way my room runs @ low/mid 70s the 4 main ac keep it right @ 55-60% but if I raise the temperature to 80s my largest ac doesn't hardly run and humidity rises to vpd range... my dehuey never runs when lights are on do to me programming the range I want it to be in during lights on... now where me n dj differ is I only run vpd for the 1rst 3 wks of flower the drop my temps n humidity .back to normal range.. I've noticed i get higher quality flowers this way ... the vpd straight thru gave me larger yields but buds weren't as resinous or smelly, remember every one's grow locations is different , pretty sure bout his air exchange being the factor n why I couldn't get the same quality running vpd straight thru ,what dj did here would be impossible to replicate where I'm located without a huge lung room so keep in mind when building what's going on outside

[stoney917]

BOUT TIME JUST REALIZED THEY FINALLY MADE THIS A STICKY., no more bumps to keep it on page 1.. better late than never

[Wizzaroo]

mind blown, I've been walking around with a big stupid shit eating grin on my face.

replaced a 5 tonne ac with a 12" blower pushing air into my room achieving the impossible (up till now) perfect VPD. easily cooling 12000w dimmed down to 9600w (gavita DE) 16'X16' growing area with 10' ceilings

no ac

no ac

no ac

still in shock

push air don't pull air, goes against everything i "know". still lots of watching and learning about how this change affects everything going forward but WTF!!!

Thank you DJM, 25 plus years I've been lighting up basements and garages from Cali to bc and you just done schooled me. stoked!

is there anything i can do for you? you need a goffer? someone to make you coffee? I'm down, work for free.

any organized format of your growing techniques i.e. a grow guide would be well received. you've elegantly solved a lot of the issues I've encountered over the years growing indoors in less then ideal spaces. theres a lot of people that could benefit from your experience.

sorry for the gushing I've been walking on clouds all day.

[GruffaloCrumble]

Sad that you're retiring. I know somewhat how you feel. While not as accomplished as you, I see things I contributed towards in the 90's and 2000's making people a lot of money while I struggle. I don't want to be rich, but it would be nice to be able to share and not have someone take it and bastardize it, while cutting you and your brethren out of it. As all have mentioned (except for the haters) thanks for your contributions over the years.

OG forever
overgrow dot com

[the gnome]

glad to see this was stickied
wow!
this thread has swelled to almost a 100 pages.
anyone know what brand of coir DJM uses?
was it something like just coir, by black gold company

[DJM]

Thanks to the mods for making this thread a sticky. I'm honored. I'm equally honored by all the gratitude, kind words and support everyone has given me over the years. I have icmag and those that came before me (with the selfless willingness to share) to thank for my success and it warms my heart that I can have that same effect on others all these years later and contribute to this community in the same way.

[DJM]

Originally Posted by the gnome

glad to see this was stickied
wow!
this thread has swelled to almost a 100 pages.
anyone know what brand of coir DJM uses?
was it something like just coir, by black gold company

thanks gnome!

ive used a ton of coco over the years..some of this threads grows were done with house and garden or plagron coco..they are pretty much the same thing and apparently come from the same manufacturing facility ..but since I left Colorado ive been using different brands..the haze run was canna coco, the motorbreath run pictured was done with hydrated botanicare bricks mixed with 30% hydroton..ive also did a run with charcior and I'm currently running tupur from royal gold at the moment and just finished a run in rockwool...id say out of them all charcoir is the best , cleanest pure coco ive tried, its just harder to get here....most coco is the same, the main differences I find are how well they are flushed/pre charged..but even the ones that aren't can be flushed and pre charged to make them better before planting..for example tupur comes too hot for my liking and run off can be as high as 1400 ppm when feeding at 700..so I have to flush and pre charge that myself..same with the bricks..the other brands ive used right out of the bag though...hope that helps

[DJM]

Originally Posted by DOCTORCOCO

Hoping someone can give some opinions and understanding of the passive exhaust ?
someone posted one benefit is that by having a positive pressure room is a benefit for mold spore and insects ?

Im wondering how much an issue smell could be ?

Anyone running or have ran possitive pressure rooms ?

Im currently setting up a room with passive intake just because thats how i have always done it !

I have ran possitive pressure in vented hoods due to neg pressure hoods could cause smell ?

This is a legal room but it doest hurt to be stealthy these days either way.

smell will be an issue if your room isn't sealed and you don't have a carbon filter on your passive exhaust..as said many times before , the only way a active intake works effectively without creating other issues is if your room is fully sealed and when I say full sealed I mean air tight...you are essentially creating positive pressure and giving the air only one way to escape, through the passive exhaust and carbon filter..but if your room isn't sealed, air will travel through every part of the room there is a hole and you will have smell and humidity issues in the rest of the location..same goes with the hoods wether you are pushing or pulling air through them, if they are not fully sealed, it wont work as well..when I ran air cooled hoods, I use to put aluminum ac tape along every crack and edge of the glass..hope that helps

[DJM]

^ with that said, if setting up a new room , keep in mind the temperatures outside through out the year..as it must be colder outside to cool a active intake room than it would need to be if running active exhaust..as the outside air is your ac, and if its not atleast 50F youd be pissing in the wind..i found that with the amount of lights I run, outside temps over 45F wont work well with an active intake..it will still cool lights but it will push so much air into the room to do so that it would displace too much RH and co2 and become counter productive..so if you live in an area where its not cold most of the year, atleast at night time, id weigh my options before designing a room around an active intake...for example, at 9000 ft elevation in Colorado I could run active intake all year, but where I am now, summers are hotter so I cant..I now design my rooms to run intakes in the winter, and acs in the summer...In the summer i then use my active intake ducting to evenly distribute the air around my humidifier and dehumidifier through out the room..if I didn't care about the cost Id just run acs all year but 8 tons of ac is expensive to run. If I just need to run a few lights and a small ac, I may do that before an active intake...hope that helps