85F to much ?

ok done

have been buzy this morning (from 5-7 ... couldnt sleep)

have put up some plastick in the end on my grow room ...so it is now sumthing like 3x7 feet insted of 3x9

so I guess from around 5 - 5,5 M3 to like 4,5 M3 ... hope this will help my vent exchanges the air even faster and compensate for the filter ..
also removed the perforatet plate from the passiv intake .. guess that atlest double my intake size ..

the tower fan is still just lieing down inside the room in front of the intake so it spread some of the fresh air that is comming in ..

if needed I can fit it in the intake opening (with a littel work) so it only can pull air in from out side (maybe a last option if temperture go sky rocked doing hottest summer days)


lets see for now Im happy ..

also since temp. this morning (after 1-2 hours with the HPS on) was "only" like 78F in the room ... 80F near the light/top of plants


lets see .. if I can keep it ther now .. with them changes I made .. even tho it is getting hotter doing the day ?

would be realy great .. then I might be able to keep it around 85F even at the hottest days ... I hope ?
and rest of the year I will have close to spot on temps.


btw

my plants






one is FIM and a littel LST .. seccon one is just LST pretty good .. like the FIM I must admit .. love to have 12+ shoots compeeting on top side )

will try to fit 4 plants next grow .. maybe not so much LSTing then ? but would be perfect .. also for my T5HO fixture as 4 would fit perfectly and I guess same go with a 600W HPS ..

Total Head said:

outdoor plants have the benefit of a constant supply of fresh air, and typically are grown in much larger pots than indoor plants, which means they don't dry up as quick as they would indoors and the lower part of their root system stays a bit cooler than an indoor plant would. even if you regularly exchange the air it's never as fresh as outside air. also, outside plants are usually much bigger with more robust root systems, and the elements tend to harden them up better than indoor plants.

Click to expand...

after all this, still I don't see why you say 85 is to high. even at 85 the plants arent going to be starved for co2 unless they are in a sealed room with no fresh air intake and no co2. The OP says he has an exhaust fan and a passive intake. so there should be no reason the air isn't fresh in there, unless his intake has nasty air some how... I supplement my indoor room with co2, so my plants think the air is even better than outside but I still don't get the same results. sure you might have to water a bit more often, but that doesn't mean it's too high. the elements that harden the plant off should be the same inside, wind and heat. The wind blowing them around and getting use to the heat is the same thing I do with fans and switching from t5 to 1000w. Yes my outdoor plants are in larger pots, they are in 20 gal. black bags sitting in the sun while it's 100+. If 85 were too hot, My grow bags outside would bake the roots, like a black car in the sun. It gets a lot hotter than the temp outside. I'm not saying 85 is the best temp but it is NOT to high!

My buddy moved the thermostat in his apt. into a bedroom just so he could use the A/C that was built into the apt. It worked but the rest of the house was cold.

NoGutsGrower said:

after all this, still I don't see why you say 85 is to high. even at 85 the plants arent going to be starved for co2 unless they are in a sealed room with no fresh air intake and no co2. The OP says he has an exhaust fan and a passive intake. so there should be no reason the air isn't fresh in there, unless his intake has nasty air some how... I supplement my indoor room with co2, so my plants think the air is even better than outside but I still don't get the same results. sure you might have to water a bit more often, but that doesn't mean it's too high. the elements that harden the plant off should be the same inside, wind and heat. The wind blowing them around and getting use to the heat is the same thing I do with fans and switching from t5 to 1000w. Yes my outdoor plants are in larger pots, they are in 20 gal. black bags sitting in the sun while it's 100+. If 85 were too hot, My grow bags outside would bake the roots, like a black car in the sun. It gets a lot hotter than the temp outside. I'm not saying 85 is the best temp but it is NOT to high!View attachment 2195417

Click to expand...

I've always thought about that myself with outdoor grows... I'm growing in a small cabinet 3x3x2 ft with a 250W HPS and only one PC fan venting it with passive intake, it runs about 91 F at night. I've been aiming to get it down but the plants seem to still be doing okay. Despite all the other neglect I've given them, the buds look dense and solid, but the fan leave don't look great.

Planning a switch to a cooltube eventually.

well I must admit that Im not so worried anymore ..

but you know .. Im new to indoor growing .. and all them diffrent infomation did confuse me a bit ..

a lot of Ppl./guides tells you that 72-78 is best .. so of course you try to get it around that ..

but my room is now pretty stable around 80-84 and Im happy with it as long as my plants seems fine and they look great now ..

most leaves is pointing slightly up at the light .. and is nice dark green and look helthy .. so as long as that continues I wont go out of my way and use a lot of time and money just to bring it down a few degress ..

also when I think of them outside plants I have grown years back .. they ofthen had +85F and even days with +90F
and my friend I have in Turkey I visit a few times a year grow some killer weed and he just spread a handfull of seed and water a littel ..
and temps. in turkey mostly get abov 90F and easily +100F and his plants dont seems to mind at all ..

you need atleast a 125mm fan for a 600 watt set up.in the summer a 150mm (Up to 550 m3/hour airflow)is great.in the winter that would be a bit too much,but using a fan speed controller would fix that.
and eventhough you can grow in high temps,you wont acheive the same results you would in ideal temps.

k .. so I guess if I buy/add another 100mm fan (187m3/hr) Im cool ...so to speak .. could work .. then runn boath at hot days and only one at winther time ..

well maybe next month when we hit juli and temps out side easily can hit 85F .. and I have more money .. lets see .. its a 100$ .. plus I guess I need 1 more filter aswell (75$)

or just live with a bit high temps. them 2-3 months a year and be ok the rest .. need to think about it and maybe try out some more stuff ..

but nomather what .. if temps out side my grow room is 75F it will for sure be higher inside .. unless I buy a AC unit witch I have no way to mount .. or somehow take the air directly from outside .. but that will only be good them 2-3 months a year .. rest of the year it would be to cold and I would have to heat that air up some how ..

agin .. guess its up to how much you want to do out of it ... and how mouch $ your ready to use ..
you know them +20% haverst you could get with spot on temps or co2 is easily wastet away if your PH or nutriens is off at some point or you mess up sumthing els ..

and I dont need to haverst a kilo evry month .. a kilo a year is more like it
so 2 plants at the time schould do it (8 plants a year) if they trive and all is 110% spot on .. so I might just grow a 3th or maybe even 4 plants as I do have the space for em now .. and get the same out of it ..

but agin .. thanks for all the help and input .. give me some idea`s and sumthing to think about ..

seems like my new "hobby" do take up a lot of time a month ago I just wanted 2 small plants under a T5HO fixture on a table with a cover .. now I have a "secret" room in my bedroom with a ventilation and a 600W HPS aso.

btw

just have a quick question ...

after I made the passiv intake bigger (double size) and the tower fan is pulling in air aswell I actualy got a "possetive air flow insted of the negatvie I had before (my curtan is now "bloweing" out insted of getting pulld in a bit)

what schould I aim for ?

possitiv (with maybe a slight smell) or negativ (with faster air flow I guess)
can see it getting pulld in agin if I cover up 1/3 -½ the intake ..

85 is fine, as long as you have good air circulation. You only need a slight negative pressure, just enough so that air doesnt escape the tent. Your curtain may be blowing out because of the tower fan, but ill bet you still have a negative pressure. Put a peice of paper on your intake, if it sucks to the intake, your ok

Have a fan directly on the bulb

thanks ..

and yea I have a normal big 12" table fan like 2 feet away from the HPS blowing at max with the safety cap removed for max blow .. its pointet in a 30 degress angle so it blow up the hoot and passd it up at the carbonfilter/ventilation ..

I guess I have to go and take some picturs .. will explain things much better .. but just made some small changes now so it have just a slight negativ presure and same time make the room more bug safe and light tight ..

this is what I have build .. did just take last meter of my bedroom and but up a "fake" wall ..






got my 600w hps up .. I know .. old modle .. but got it recondisiond with new wireing and bulb for like 100$ or so ..
and it is a greenhouse modle and German made me like ..



inside .. as you can see I did fit a playwood plate at the intake .. but removed it to to give room for the fan ..










my ventilation .. 100mm 145/187 M3/hr ..wondering if I schould buy another one..could runn boath at hot days and one at night time/winther time ?




my door .. black tick (2mm) rubber and a zipper from a dust door with clue on the back ..
works pretty good ..



my ventilation and carbon filter .. did go with a littel more expensiv filter that can be refild and easily can handle my vent.






ups ...



my DIY intake box I just made to shild the room from the window light and to give it less intake size .. found a "spot" wher I just have a negativ presure .. not much .. just so I can see the rubber curtan get sug in 1/4 inch or so ..



did also fit the perforatet plate agin (3mm holes) will keep bigger bugs out and I needed it to make the negativ presure ..





my outtake .. I know .. not pretty .. put still in work .. and in the end I also plan to hang a big wall to wall carbet and a high bookshlf (from floor to sealing infront of the door .. maybe on hangers or some kind of rail so it is easy to get acces .. top self will be for my outtake ..






tower fan at the intake .. spread the fresh air around .. window out side is crack open and I got nice ventilation in my house as it is rather new build ..



but temperture seems to be pretty stable nomather what I do .. 24-25 celcius out side and like 29-30 inside ..top of the plants or like 1½ feet away from the HPS its like 31-32 ish ... night time its around 22-24 boath in and out .. humidity is the same .. lowest I have seen is like 35% higest is like 45% but mostly around the 40%ish




my fan at work .. and the plastic I did put up to make my room M3 smaller so the ventilation might do a even better job .. dont use that small space in the back anyway ..





and my 2 baby girls (voilator kush)
26L pots with light mix .. flora duo nutrianc .. 6 weeks from seed .. one is FIM and a littel LST one is just LST a lot ..




guess that all for now

feel free to comment on anything .. mistakes or thing you would changes or add or do diffrent .. or things you thinks is good

Ooh yea and may I add that this room with it all in cost me less then 400$ only thing I did buy was the used HPS the new ventilation/ filter and the zipper .. the tower fan and table fan I had for years .. rest I got from work ... for free I guess I do pay off to stay late and work hard ..

p.s.

did of course also buy the pots, nutriance, seeds and dirt ..

but I guess that comes with evry grow .. unless you produce seeds yourself .. and have a backyeard wher your make compost dirt and a shed for pottery

if thats a real wood floor, i would put something on top of it to protect it from water and moisture....Would be horrible if your floor warped.

*BUDS said:

Another thing, you should always run the light at night 2 reasons ,1- its 20deg cooler 2- you use 'off peak' electricity usually between 9pm and 9am
and the consumption is cheaper at this time rather than peak time.

Click to expand...

Might not work the same way in Scandinavia...I know it doesn't in the rural South USA.

yea I do have some plastic cover .. just have`t got it up yet (forgot it at work)
tho I have`t been giveing them wather in ther yet .. will be carefull when I do and Ill get the plastic up next week ..


and yea we pay by the kilowatt used .. not when we use it .. tho it do make sens that it schould be cheaper at night time ..
but try to explain that to the eletric company and more importent out goverment who get taxes from it ..

no only reason why I would runn em at night would be to avoyd the heat at day doing the summer months ..
I just dont know if it is a good idea and if I choose to .. how it is done .. Bc. then I would have to give em either 18 hrs dark time .. or 26 hrs or so of light .. if I want to changes it to etc. 8 evening to 8 morning ..

NoGutsGrower said:

after all this, still I don't see why you say 85 is to high. even at 85 the plants arent going to be starved for co2 unless they are in a sealed room with no fresh air intake and no co2. The OP says he has an exhaust fan and a passive intake. so there should be no reason the air isn't fresh in there, unless his intake has nasty air some how... I supplement my indoor room with co2, so my plants think the air is even better than outside but I still don't get the same results. sure you might have to water a bit more often, but that doesn't mean it's too high. the elements that harden the plant off should be the same inside, wind and heat. The wind blowing them around and getting use to the heat is the same thing I do with fans and switching from t5 to 1000w. Yes my outdoor plants are in larger pots, they are in 20 gal. black bags sitting in the sun while it's 100+. If 85 were too hot, My grow bags outside would bake the roots, like a black car in the sun. It gets a lot hotter than the temp outside. I'm not saying 85 is the best temp but it is NOT to high!View attachment 2195417

Click to expand...

to be clear, i don't necessarily think 85 is too high, although it's very close. i was pointing out why high temps indoors are more of a problem than outdoors, not advocating a particular threshold. if you supplement with co2 then that would be the difference right there. the plants are thriving because they are able to make use of the co2 due to higher temps, and would be able to make even better use of the co2 at higher temps than 85. try running an indoor grow at 93 degrees without co2 and see if you don't find that high temps are relative. high temps without co2 can be quite the bitch with most strains.

i disagree that plants harden off indoors the way they would outside. the temperature swings and general randomness of outdoor weather is not the same as an indoor grow.

*edit: i noticed you are from cali, so maybe your weather holds steady and there wouldn't be a difference. outdoor plants here can be sitting in 80 degree weather one day and 50 degree weather the next, and 95 degree weather two days later, with humidity/dew point levels all over the scale, and unpredictable heavy rainfall. it's common practice when plants (tomatoes, for example) are started indoors to gradually introduce them to the outdoors to harden them off BEFORE planting, or the shock will get 'em. different strokes, i guess.

Total Head said:

to be clear, i don't necessarily think 85 is too high, although it's very close. i was pointing out why high temps indoors are more of a problem than outdoors, not advocating a particular threshold. if you supplement with co2 then that would be the difference right there.

i disagree that plants harden off indoors the way they would outside. the temperature swings and general randomness of outdoor weather is not the same as an indoor grow.

*edit: i noticed you are from cali, so maybe your weather holds steady and there wouldn't be a difference. outdoor plants here can be sitting in 80 degree weather one day and 50 degree weather the next, and 95 degree weather two days later, with humidity/dew point levels all over the scale, and unpredictable heavy rainfall. it's common practice when plants (tomatoes, for example) are started indoors to gradually introduce them to the outdoors to harden them off BEFORE planting, or the shock will get 'em. different strokes, i guess.

Click to expand...

My indoor plants don't grow any where near as fast as my outdoor even though they have the extra co2 and "perfect" room conditions. In a previous post I also said I can't say 85 is the best, but I can say it is NOT too high! I have to harden my plants off to the 1000w just the same as I do before taking them outside, or I can just harden them under the 1000w and then they are full sun ready. They get put further away from the light and moved closer and closer, kinda the same outdoors, I stick them in the early sun and take them out then back for more sun later. My indoor plants get blown around more than my outdoor, with all the fans going in my room I could make them think they were in a storm if I wanted.

looks good to me m8 ..for the last couple of weeks we have been getting mental hot temps and ma wee room has got as far as 90 and the plants seem fine so i think 85 is okay.. just keep yer eye out for signs of the plant getting stressed out....its all good m8 keep up the good work