Indoor Garage Attic Grow Room

[powlusr]

I have been vegetable gardening for 35 years, starting many plants indoors from seed, so I'm not quite a newbie. I recently decided to put a grow room in the 'attic' above my garage. I plan to grow 9 autoflowers in a 4'L x 3.5'W x 4'H room (as high as I could go) for medicinal use.

I built the room, ran electric, cut a 6" inlet and outlet hole, and painted it white. I'm not sure if mylar would be benefcial in a room this small?

Today I installed the carbon filter and connected it directly to a 600W HPS cool tube light. I'm running all 6" duct inside the room, and to outside, then downsizing to 4" with a 4"/165cfm fan. The 4" fan will be in an old cooler, running constantly, and exhausting to the outside. I need to modify and soundproof the cooler, possibly add a muffler, and install the fan in the cooler (next project).

How does all this sound? I welcome any comments/suggestions on my grow design from experienced growers.

 

[Bgrt]

sounds good, i dont see any problems anyway. matt white paint is nearly as good as mylar and i wouldnt bother changing. what strains are you choosing? most should be fine in 4 ft of headroom anyway. long runs of ducting will lose you cfms have you turned it on yet? id leave it run for a day and check temps.

a hps might make the plants stretch a little compared to a mh bulb might be an idea to get one if you have a ballast that can use both. and switch back to the hps when theyre flowering. also you wont need 600 watts for seedlings maybe use a cfl to save some cash but upto you anyway all minor things.

https://www.autoflower.org/f5/what-reflective-materials-can-i-use-my-grow-room-3931.html

 

[Carbon]

This is going to sound really stupid but where is your fan connected to the filter?

 

[Bgrt]

it looks like its outside of the grow area(or will be), filter>cooltube>ducting>fan in a cooler i assume.

 

[newbud]

hi have a look here this is a good way to set it up http://www.indoor-growing.com/en/node/44

 

[powlusr]

...what strains are you choosing?

a hps might make the plants stretch a little compared to a mh bulb might be an idea to get one if you have a ballast that can use both. and switch back to the hps when theyre flowering. also you wont need 600 watts for seedlings maybe use a cfl to save some cash but upto you anyway all minor things.

I have:

3-Dutch Passion feminized Auto Blueberry

[FONT=&quot]5-BUDDHA SEEDS feminized [/FONT][FONT=&quot]WHITE DWARF AUTO[/FONT]

1-Dinafem Seeds White Widow AUTO

I will be starting them under a 4' T5 sometime in March or April. I am waiting for roofers to install new shingles before I start.

My ballast is switchable and I have HPS and MH bulbs. The ballast also has 3 power settings. Specs: COOL TUBE with XL WING - iPower DIMM 600w 600 watt HPS MH Grow Light System Kit #160722062856, From: hpsgrowlightstore

I thought you start with HPS and finish with MH?

 

[Bgrt]

usually start with mh finish with hps or both. sounds like a great setup anywaym, t5s are great for seedlings. mh and t5 will keep internodal spacing closer together. hps will make them stretch a little.

mh has a bit more uv which helps with tric developement i think but other than that most people use hps for finishing. hps is better for building buds(weight wise) cant remember exactly why though.

 

[powlusr]

it looks like its outside of the grow area(or will be), filter>cooltube>ducting>fan in a cooler i assume.

Yes, filter>cooltube>ducting>fan in a cooler. I still need to get the fan in a cooler and hook it up to the light. It will be outsiide of the grow room. I am hoping one 4" fan for filter and light will suffice in a room this small.

 

[Bgrt]

there s a formula for air exchange somewhere i cant think of it though cfm air echange formula googled should probably have it if you wanna check. i think you aim for 2+ air exchanges per minute.

is there a reason you need the fan at the end of the chain you might be able to have it quieter having it
filter>tube>fan>ducting muffled cooler box>out
or
filter>fan>tube>ducting muffled cooler box>out(unless your fan is 4" and wont fit)
not sure though depends on your attic/fan etc.

suspending it from bungie cords can help keep down vibrations too. maybe even inside your box if its going there.

 

[powlusr]

is there a reason you need the fan at the end of the chain you might be able to have it quieter having it
filter>tube>fan>ducting muffled cooler box>out
or
filter>fan>tube>ducting muffled cooler box>out(unless your fan is 4" and wont fit)
not sure though depends on your attic/fan etc.

The room is so small that if I can get the fan outside it will be helpful to have the extra space. I have an old cooler I was going to throw out (rusted corners). Putting the motor inside the cooler with some sort of sound absorbing material (suggestions?) should keep it quiet. I will probably also build a muffler outside of the cooler to quiet the moving air.