11" headroom enough for 250w reverse scrog?

[Eol]

Alright guys,

Here is a pic of my nearly assembled cab. I'm going to be doing a build and grow journal but just wanted to get everything sorted first.

As you can see it's a pretty small space. I soundproofed it with acoustic foam as stealth is a priority - I must say it definitely works, but this reduces the available space even more. That white thing behind the cooltube is my S&P silent fan.

There's 11" headroom between where the reverse scrog screen would be, and the cooltube.

I think I should be ok, provided I judge the stretch adequately as I can't see 250w buds getting taller than about 8-10inches, but I just wanted some of your opinions.

If need be I can remove the bottom layer of acoustic foam, but I'd rather not if at all possible.

Thanks all!

 

[Noobian]

That's gonna be tight but should be do-able for you Eol. With a cooltube you can have your buds actually touching the glass provided you have adequate air movement in there. Speaking of which, it doesn't look like you have any secondary fans to help push the air around and strengthen up the stems? If I were you, I'd try and get a small clip fan mounted in there to keep it cool and help the stems rigid up. Other than that your setup should be ok for what you are trying to do. Good luck man!

 

[FreezerBoy]

Depending on strain, a 250 can deliver colas in the 20+" range. However, that doesn't mean you have to grow them vertically. Whatcha growing and what sort of flower period we looking at?

That white thing behind the cooltube is my S&P silent fan.

Please Sir, may we have more (info, that is)? Seriously, pretend it's your new baby...

 

[Eol]

Noobian, thanks for that man - yeah I need to invest on a clip on fan, atm I've got a computer fan that I can use so should be ok for now.

Freezerboy - gosh I hope mine don't get that tall - it's sour diesel, flowering time ~75-85 days and it is a stretcher. I'll be getting some advice from the rez seeds subforum when the time comes to judge when to flower, that's for sure.

The S&P silent fan is what I'll be using for extraction. It's got two settings, 106cfm and 206cfm. Atm I've got it on 106cfm, but of course put up to high if need be. It's only 19db so it's whisper quiet =).

Going to exhaust out of a carbon filter at the top, outside of the cab. Not ideal, but it'll muffle the sound and there's no room for it inside the grow cab.

Think that'll be ok?

Thanks all!

 

[FreezerBoy]

I've never done the cool tube thing so I can't speak to the safety of touching the tube. However, with a 3 month flowering period I'd be prepared for some late stage LST or Super Crop *. It will lead to some funny looking colas but, they'll smoke just fine.

Technically, it's better to pull air than push but, man's gotta do what a man's gotta do. Plus, the scrubber on the outside will provide some muffling, everything's a tradeoff...

Can I ask where you got a dB rating on the S&P? That wasn't something they listed when I bought my mixed vent.

* Crush stem between thumb and forefinger, rotate grip 90º, crush again, fold stem and secure with: pipe cleaner, twist tie, plant tape, string... something that prevents stem from straightening up.

 

[ItGrows]

I think you could out grow that space with one 42w cfl. From my experience container size will control your growth. I would not try a 250w in that small box. I hope it works out for you. Also please pick up a fire extinguisher. GL

 

[Eol]

Cool freezerboy, tyvm for the info. Yeah I'm prepared to do some heavy training. I think I'll increase the fan to its highest setting, just to ensure the buds can get as close as possible (provided it's not too noisy).

I think the fan I have is a different model to the mixvent, albeit using the same technology, just quieter. A couple of sites I looked at displayed the db level, here is one for instance: http://www.tlc-direct.co.uk/Products/SLTD350SILENT.html

It is very quiet though, and provided I muffle the exhaust with the CF, it should be no louder than my PC (aka my mother cab ).

ItGrows, cheers man but I'm a HID man, want to get as much out of it as poss, and HID is the way forward for that =) - I know it seems a lot for that space, and I could have probably done with just a 150w, but I had ordered the ballast and the bulb before I soundproofed it, which unfortunately reduced the space available considerably. You are right, container size does control growth. But growing in SWC/DWC, the bigger the container the better as it's easier to control temperature + ph then.With regards to a fire, well let's not tempt fate!

Thanks all for your input, all my sour diesel babies have just popped, and my carbon filter arrived today, so will be getting a build and grow journal up and running this weekend! =)

 

[hazydreams]

a word of advice on this cab. your going to have a rather large shaded area behind the cool tube where the fan is sitting. You are already placing a carbon filter outside the box. Why not just plumb the tubing to the fan outside as well. Your going to have to hide the carbon filter anywawy so why not just deal with both at the same time. It will free up some space inside and give you a better footprint, which is already crappy, the cooltubes footprint is teh suck.

 

[Eol]

Yeah I have been thinking about that hazydreams, the issue is the more equipment I have outside the cab, the more conspicuous it becomes. Also I couldn't hear the fan itself running inside the cab, thanks to the soundproofing, whereas it might get a fair bit noisier if it's outside the cab.

I was going to put the carbon filter inside a laundry bag, and chuck a few old t-shirts in there so it just looked full and no one will want to go near that - if I had the fan outside, I could put it and the carbon filter inside a rubbermaid tub, and line it with acoustic foam and disguise it with books and folders etc.

It's definitely an option, I have covered the fan in reflective sheeting, but hmm - I'll have to have a play about with both - thanks a lot =)

 

[ItGrows]

ItGrows, cheers man but I'm a HID man, want to get as much out of it as poss, and HID is the way forward for that =) - I know it seems a lot for that space, and I could have probably done with just a 150w, but I had ordered the ballast and the bulb before I soundproofed it, which unfortunately reduced the space available considerably. You are right, container size does control growth. But growing in SWC/DWC, the bigger the container the better as it's easier to control temperature + ph then.With regards to a fire, well let's not tempt fate!

Thanks for that tip on HID... If that was my cab I would have put 1 42w cfl in vertical. I think the harvest would be comparable.

 

[Eol]

ItGrows, I'm not sure if you're trolling or not, but if you genuinely believe the yield of a 42w CFL will be comparable to a 250w HID lamp, then you need to do some more reading. Not being demeaning, but I'd recommend having a look in the library of links stickied in this forum.

 

[ItGrows]

50w per square foot is optimal.

 

[FreezerBoy]

A 42 w CFL can't compete with a 50 w HID let alone a 250. A 42 would be more suited to maintaining a bonsai mom.

In the meantime... play nice.

 

[ElGato]

probably not



mj

 

[MagicChef]

Looks clean....Have you made your mind up on going Hydro for sure?...Ive never done it personally but rumour has it growth is greater vs. Soil. If you DWC,SWC your roots will have tons of room and keep growing rapidly... If you went with smaller soil containers and feed more regularly you could control growth a bit more than with hydro. Just my 2 cents. I wouldnt veg long either....Choose a strain with very little stretch after flipping to 12/12 and flip early.

Peace
MC

 

[MagicChef]

Thanks for that tip on HID... If that was my cab I would have put 1 42w cfl in vertical. I think the harvest would be comparable.

Oh no u didnt!


Heres what (2) 26 W cfls did for me...


Here's a 250 w HPS...








https://www.icmag.com/ic/picture.php?albumid=24625&pictureid=535791

 

[ItGrows]

Oh no u didnt!


Heres what (2) 26 W cfls did for me...


Here's a 250 w HPS...

Looks like you got a bit more room with your 250... I could grow huge plants with a 250 and unlimited space. That is not what is trying to be done. Your 2 26w... I have no idea how much space that took. I know with a 42w bulb my plant can grow right into it.

 

[MagicChef]

Im not hatin on you man but there is a major difference in lumen output of those lamps. Regardless of space you have to work with a 42 w CFL cannot compete with a 250w HPS. PERIOD.

 

[stihgnobevoli]

you should check out my previous grows, thats about how much headroom im working with in my cab after 6 inch tall pots. you can get something decent in that space if you plan for it. you gotta pinch and bend and train or use short strains, or start 12/12 from seed. not enough room for much veg. maybe 3-6 inches then top and flower train out at an angle to maximize area. also look at the way the light falls from the bulb. for what youre doing a scrog in a short space you should really orient the bulb the other way if possible with the tip or base facing the door/back. you're wasting a lof of light with the bulb mounted the long way.
anyway your cab looks similar to mine and i just started a hydro with a 70w hps. check it out links in sig.

 

[ItGrows]

Yep there is a difference. I think you also forget a plant can absorb only so much. Too much of anything is bad for a plant EVEN LIGHT! GL on this grow I cant wait to see it!