Schtrudels Second Microgrow. First ScrOG attempt. Northern Lights

you smoke weed with a zippo??? that sounds terrible.

check out bics they are like a dollar.

or hemp string is even better.

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i don't smoke with it, i keep it for show. pretty cool to own a zippo, lol XD.

I run 120mm 110 cfm pc fans one intake one exhaust in a 17 1/2 x 18 x 33 inch box have no problems keeping my 150hps cool but its remote ballast and not the type with the ballast built into the hood. Run 6500k and figure out how to get your plant up to the lights that should fix your stretch tomorrow ill try to help you with an easy fix for the hear but 6500 run cooler then 2700. Im tired or i would write out some simple fixes to try so i will get at you in the morning.

schtrudel said:

i don't smoke with it, i keep it for show. pretty cool to own a zippo, lol XD.

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I would hope not cuz i have used one freaking ruined my bowl tasted like zippo Never again i will use a match before a zippo if im in need of flame that bad or just go to the kitchen for some knife hits

I would hope not cuz i have used one freaking ruined my bowl tasted like zippo

Never again i will use a match before a zippo if im in need of flame that bad or just go to the kitchen for some knife hits

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I'm looking into lighting my zippo with alcohol. 95% concentration should light fine, not smell and have a nice blue flame. I don't need it to be able to be light outside cause i don't toke outside, nor do i smoke tobacco.

Modifications update
>moved plant within 3 inches of the CFL
>installed other fan(that was supposed to suck the heat from the top and move it to the bottom) so that it blows cool air on the plant
>put reflecting sheets of aluminium underneath the plant so the soil doesnt get hot/absorb light. Thus more of the light is used.
>plant temperatures dropped to 28 celsius because of fan.
>added a 2l bottle with fermenting yeast and sugar for CO2. Not really sure it produces enough CO2. Also i've read somewhere that you need to add sugar in proportion to the volume of the box. 32 times less than the volume => 1m3 of box = 1kg/32 sugar. so i need about 50 grams of sugar per day (not really sure i've done my maths right). Assuming the bacteria transform 100% of the sugar. The reaction is 1/2mol co2 1/2mol alcohol. when the alcohol concentration is critical , the yeast dies.....
The big piece of aluminum foil i've removed, it was there only during the picture.
through a magnifying glass...

added 400ml of dirt to cover all the space left

I'm here!

Quick question: How much CFM is recomended to push air through a DIY filter? 60 cfm? 100cfm? more ?!?!
i need to know before i order my fan, i don't want it too big because of the sound they make 40db is actually loud XD.

Should i go for one of these bad boys (preferably the 125mm version, it had like double the CFM of the 100mm)
http://www.prodimar.ro/ventilator-axial-in-line-vko1-p3364.html
http://www.prompt-service.ro/produs/ventilatie/ventilatoare-vents-vko1--p613.html
Or should i go for a regular(CHEAPER) PC fan case ?

just get a odor block that you sit next to your exhaust that will help a lot but building a scrubber is say $40 in fans $20 for carbon and probably $40 for building supplies. Wait for the scrubber till you upgrade your setup. But if smell is a extreme issue i would say do not grow only bad things will come of it im to the point were i have pissed my roommates off so much i might have to quit growing hahahaha fuck em they think i just smoke a lot and complain about the smell 24/7 if people in your house aren't smokers they will for sure smell your plants i know i sure as hell cant smell mine but anybody that comes over asks me if i just smoked a blunt of some dank i just smile and tell them why yes yes i did u just missed out hahahaha Its going to be super hard figuring out a fan that will work under 40db i think my 110's are 46db loud as shit if you dont have a computer or tv running.

This site has the quietest fans around, I have never bought from there though might replace my fans on my mrgrowpro with these when it comes.
http://www.endpcnoise.com/cgi-bin/e/std/category=Quiet_Case_Fans.html

The quietest fan on the site at 9dB, 38cfm 120mm is:
http://www.endpcnoise.com/cgi-bin/e/std/sku=120mm_silenx_9db.html?id=toRikXZz

This site has the quietest fans around, I have never bought from there though might replace my fans on my mrgrowpro with these when it comes.
http://www.endpcnoise.com/cgi-bin/e/...Case_Fans.html

The quietest fan on the site at 9dB, 38cfm 120mm is:
http://www.endpcnoise.com/cgi-bin/e/...ml?id=toRikXZz

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Thanks, but i like in a country where buying these thing off the internet would raise the price too much(transport taxes).

But my question is: how much CFM, or pressure (measured in Pa) is needed to push air through a filter with a surface area of 200cm^2 (20x10cm rectangle) and 1 inch of active carbon ? And how much CFM would i lose because of the drag(resistance) the filter puts on the air?

To understand my question : fan has, let's say 100cfm, you install said filter, how much cfm of air are there left ? 40% 50%, less ? Asking you guys who already use active carbon filters.
Sorry for being noob-ish, but i'm on a very tight buget with all the exams and what not(i have to pay school fines for skipping anatomy and english classes, retarded university policy).

Update:
>plant sees a bit stretchy
>already started giving a faint smell. This smell is sweed, fresh cut grass/pine tree like. It's wonderfull
>temperature problems. But plant seems fine
>bore bigger hole in my side of the box, didn't have time to make a adequate sized one so it will have to go by with what i can give it until i finish with my Histology exam.

pictures:
The yellow-ish color is normal i guess, cause it starts yellow as new-growth and then it turns a darker color with time.
Pictures taken through magnifying glass, different angles.
It grew 1cm tall since yesterday and got bigger leaves and 1 set of new leaves

If you can get more air to blow over the bulbs they will stay cool to the touch and fix your heat issues. Also if you blow air on your plant it will strengthen your main stem and it helps with stretch as well. From my understanding you will loose about half your CFM depending on how much carbon there is and the shape and design of the scrubber.

heres the $20 carbon scrubber
https://www.rollitup.org/do-yourself/101248-best-diy-ez-walmart-carbon.html

A buddy of mine runs this on a 1000hps in a bigger wooden cab he has a 150cfm fan but the thing is he has a AC unit built into the side of his cab. Its best to suck air through your scrubber but he had it on a duct from the 150cfm on the outside said it worked like a charm.

is it possible to drop your lights any closer your going to spend a lot of time vegging that sprout up to the screen especially if you are now going to LST before hand. Your grow space although well thought out is a bit messy perhaps tidy up things also that screen looked a bit on the sloppy side I wouldn't go further then 6 inches away from those CFL's they become useless in flower after that distance.

Well, i ordered a 110CFM fan. When it arives i'll install it and i'm pretty sure i can scrap the intake fans and turn them into light cooling fans, like you said.
The place is messy because i still lack the materials needed, i Wasted so much time thinking about how to make the box instead of actually making it(i always get a better idea and delay modifications because of that)

Current plan:
>add 110CFM fan. Build DIY carbon scrubber from empty soda bottles, aquarium active carbon, some duct tape and some wire mesh i have lying around
-my box's volume is 2foot by 2 foot by 1.5 = 6cubic feet. 110 cubic feet per minute fan would replace the air inside ~18 times a minute, which is more than enough IMO.
-let's say i lose 50 or 60% of cfm after i add the scrubber, it will still be 7-9 times a minute, which is Still enough.
>last night i installed 3 more light sockets which won't be operational untill i get the extractor so i can deal with my heat issues.
-current temperature 34 celsius. like 93 fahrenheit. A bit too much, but my little one seems fine.
>add reflectors in all the parts where there is no plant so all the light gets concentrated on the planting pot(less wasted light absorbed by random stuff in the box, for example: the pot, the fans, the books i keed under the pot to bring it to the light
>repair all holes i had to bore so i get enough exhaust. They are sloppy now, random formes just cut in there for usefullness not for aesthetics.
>MAYBE get some mylar if i can get some for free.

Conclusion:
>current watts 100. Total wats 180. at 65lm/watt that should equal 11700. My box has a footprint of 3 square feet, but i'll get reflectors so the side light gets on the plant too(with some losses, obviously, but minimized)

I'll post new pictures tonight, now it's not the time.


EDIT: can't wait for my fan ...

Fan hasn't arived because they had a problem with the post office and i had to use another courier.
I've put my plant 1 inch from the lights and the fan was blowing on the bulb, it was quite cool to the touch, but still it produced some heat damage. CURSE YOU, PHYSICS. I'm sure the air blowing on the plant dehydrated it.
Anyway, pics:

The damage is minimal, it doesn't worry me.
I'd have prefered it not to have happened ffs.

Pictures are taken with a loupe put in front of my phone's camera.

Ok so i want to enhance the CO2 ppm of my room by as much as i can. I'm staying in the room 12 hours a day.
EDIT:I'VE DONE ALL CALCULATION ON THE FORUM DIRECTLY AND I THINK I MIGHT HAVE OVERTHOUGHT THIS A BIT. IN CONCLUSION, MY SIMPLE PRESENCE IN THE ROOM 12 HOURS A DAY SHOULD BE MORE THAN ENOUGH TO GET THE 1500PPM NEEDED FOR MY PLANT. READ THE NEXT PARAGRAPH IF YOU WANT TO FIND OUT HOW TO CALCULATE HOW MUCH CO2 TO ADD TO A ROOD AND HOW TO CALCULATE HOW MUCH ALCOHOL YOU MUST BURN TO GET THAT CO2.
>normal average human my age 15 breaths per minute. Normal average volume expired by human my age 500ml. 15 x 500= 7500ml=7.5L. 0.03% inspired air. 5% expired air. That total 7500x0.05= 375ml of CO2. 1 gram of CO2 = 556ml(acording to a website, i didnt calculate it myself). so that's ~0.7 grams of CO2 expired by me per minute.
>my room has 72 cubic metres volume. But a big part is furniture, me, pc, other stuff. so let's say 70cubic metres(easier to calculate).
>to get 1500ppm you multiply room volume by 0.0015 => 70x 0.0015~0.1 cubic metres of co2 to reach 1500 ppm. 0.1 cubic metres =100liter. 22.4 litres of gas = 1 mol of substance. So 100L/22.4l=4.46 moles of CO2.
>molecular mass of co2= 44g/mole=> i need 196g CO2 to get to 1500ppm in my room.
I intend to get to that ppm by burning stuff, most of which i have is sanitary alcohol(i.e. ethanol, ethilic alcohol)
>1 mole ethanol + 3 mole O2 -> 2 mole CO2 + 3 mole H2O (combustion reaction of ethanol). This means i have to burn 2 moles of ethanol to get 4 moles of CO2 (my target is ~1500ppm not 1500 EXACTLY, the more the better, while keeping it under 2000ppm- i heard it's bad for the plants if it's that much)
>1 mole ethanol = 46 grams =>2 moles = 92 grams
>alcohol weight to volume ratio is 0.785g/ml. Using basic maths we get ~117ml alcohol.
>sanitary alcohol is 70% alcohol by volume so i need about 167ml for 1500 ppm. That's a bit too much, but we haven't calculated how much ppm do i add to the room by simply breathing, i only calculated how much weight in CO2 i add to the room per minute, which is 0.7 grams CO2.

>molecular mass of CO2 is 44g per mole.
>i stay in the room for 12 hours meaning 12x60minutes= 720 minutes. 720 minutes x 0.7g co2 per minute = 504g co2. In moles 504/44= 11moles of CO2. WTF.... 11 MOLES OF CO2 ARE LIKE 2 TIME MORE THAN I NEED. I KNOW THEY ARE OVER TIME, NOT ALL AT THE SAME TIME, BUT I HAVE TO TAKE INTO CONSIDERATION I OPEN THE DOOR, THE WINDOW, W/E.


Someone who knows their chemistry better than me or who already enhances the CO2 ppm in their room please review what i wrote and tell me if my presence in the room is enough. Thank you.

Picture was taken 12 hours ago.
These were taken now.

I started LST-ing it.
I've tied it to a side of the pot and i'll keep doing that till i get it all over the circumference. After that i apply the scree.
F*cking assh*les didnt send my fan yet ...

pictures. The heat damage was actually severe for the first 2 leaves. the others seem fine, though

Looks alike a sativa dominate plant you got there Are you still running mostly 2700k if you could take a pic in blue spectrum i could tell more on whats going on with the plant but it looks slightly yellow. Are you feeding yet what kinda soil also whats the ph of the water you running tap water?

Looks alike a sativa dominate plant you got there

Are you still running mostly 2700k if you could take a pic in blue spectrum i could tell more on whats going on with the plant but it looks slightly yellow. Are you feeding yet what kinda soil also whats the ph of the water you running tap water?
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First of all. I have no means of measuring the pH . Last time i used my GF pH meter she uses at work on my water and it tested about 6.5-6.7. The soil is a mix that was recomended by the seed bank. It's a local seed bank which i sincerely don't trust.
It started smelling slightly. It's sweet, musky, skunky, pine-ee, herb-like.
The new growth is very light colored but it gets darker to the tip as it gets older, not worrying.
I'm pissed that i burned the first 2 leaves(she was too close to those bulbs) OR it's nute burn and the soil is not what it says on the package, unfertilized artificially, only natural stuff (mix of sand, perlite, compost and peat i guess- basically what everybody else uses). The soil pH was guaranteed at 7.0.

I'll try to get better pictures so you can judge better. Thanks for the help and the interest you present to my thread.

pictures were take in natural light. Outside is very cloudy.

schtrudel said:

First of all. I have no means of measuring the pH . Last time i used my GF pH meter she uses at work on my water and it tested about 6.5-6.7. The soil is a mix that was recomended by the seed bank. It's a local seed bank which i sincerely don't trust.
It started smelling slightly. It's sweet, musky, skunky, pine-ee, herb-like.
The new growth is very light colored but it gets darker to the tip as it gets older, not worrying.
I'm pissed that i burned the first 2 leaves(she was too close to those bulbs) OR it's nute burn and the soil is not what it says on the package, unfertilized artificially, only natural stuff (mix of sand, perlite, compost and peat i guess- basically what everybody else uses). The soil pH was guaranteed at 7.0.

I'll try to get better pictures so you can judge better. Thanks for the help and the interest you present to my thread.
View attachment 2043597View attachment 2043598View attachment 2043599View attachment 2043600View attachment 2043601View attachment 2043602View attachment 2043603
pictures were take in natural light. Outside is very cloudy.

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I notice it on your bed does your pot have a good amount of drainage holes? So are you plain on feeding it at all or is it a super soil and you dont need to? You should just got a the pet asile at the store and get a simple ph drop kit sometimes when you get a bunch of ran or run off in your water supply if messes with the ph. Hope your fan comes soon!

I notice it on your bed does your pot have a good amount of drainage holes? So are you plain on feeding it at all or is it a super soil and you dont need to? You should just got a the pet asile at the store and get a simple ph drop kit sometimes when you get a bunch of ran or run off in your water supply if messes with the ph. Hope your fan comes soon!

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Well, today i've finished with me exams so tomorow i'll go buy a 120mm 60CFM pc fan and going to make my own carbon filter.
I'll see how much is a pH test kit.
It's some sort of super soil i guess. The seed bank recomended that soil so i just went for what they said (they grow these plants in the same soil i guess).
Tomorow i'll post new pictures of new growth. Leaves are curling a bit upwards, but that happened to last grow and it was fine.

BRB, LST-ing it.