300w HPS SOG Grow setup, help appreciated

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raeman1990

Well-Known Member
Hey guys ive been here awhile but i havn't had a grow in over a year due to living situations. Now i have my own house and i want to start a SOG grow.

I have a 5 x 6 x 10' tall closet that im going to grow in. i have a 1' x 3' shelf i installed where im going to grow. I bought 2 150w HPS lights and i plan to rig them to the same reflector over the 1 x 3 foot area. Does that seem to be enough light? Together they will put out 31,600 lumens over 3 square feet.

I bought a standard wally wart brand twin window fan. I have a 7'' duct hose i am going to use to vent hot air away from the lights. the other fan will vent out from my veg cab. I plant to veg 1-2 mothers, untill i can take at least 6 clones every month, i plan on flowering 10 SOG style plants under the lights, i also have 200w of various cfl's to use as side lighting.

Any comments or advice is appreciated.
 
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sogbunn

Well-Known Member
raeman1990 said:
Hey guys ive been here awhile but i havn't had a grow in over a year due to living situations. Now i have my own house and i want to start a SOG grow.

I have a 5 x 6 x 10' tall closet that im going to grow in. i have a 1' x 3' shelf i installed where im going to grow. I bought 2 150w HPS lights and i plan to rig them to the same reflector over the 1 x 3 foot area. Does that seem to be enough light? Together they will put out 31,600 lumens over 3 square feet.

I bought a standard wally wart brand twin window fan. I have a 7'' duct hose i am going to use to vent hot air away from the lights. the other fan will vent out from my veg cab. I plant to veg 1-2 mothers, untill i can take at least 6 clones every month, i plan on flowering 10 SOG style plants under the lights, i also have 200w of various cfl's to use as side lighting.

Any comments or advice is appreciated.
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good luck!!! soil, hydro or hempy???
 
Hairy Bob

Hairy Bob

Well-Known Member
The rule of thumb is 7-10,000 lumens per sq ft, you have pretty optimal lighting. The sun gives about 10,000 lumens/sq ft on a clear summers day.
Heat might be a concern, what type of reflector do the lights have? Is it just like a bent sheet of ally attached to the light fitting or something enclosed that you could attach ducting to?
I'd give it a run with no plants in there, leave it for a few hours through the hottest part of the day and see what the temperature reaches. If it never gets above 85 you should manage with what you have. If it's more you may need a bigger fan or better cooling for the lights.
 
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raeman1990

Well-Known Member
THere are pictures up there /\ /\

There is a 10 inch wide duct that connects to a 7 inh duct hose. i plan on getting an inline fan, or a high velocity fan.
How many cfm's would work for 300w? the reflector its self works great,
 
Hairy Bob

Hairy Bob

Well-Known Member
Nice job on the reflector, just a shame it's flat rather than dimpled ally, gives a more even light distribution.
Since you'll be exhausting the room through your light, this guide should apply https://www.rollitup.org/view.php?pg=faq&cmd=article&id=581 .
One thing that isn't mentioned often is that running your lights at night will help greatly at evening out temps, just thought I'd throw that in here.
 
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raeman1990

Well-Known Member
Thanks, i had thought of running it at night, but unfortunalty its about 87 with 100% humidity at day and like 83 with 80% humidity at night, so the temps never drop in the room more than 1-2 degrees. but fall is coming up so maybe i will do that later in the year.
 
Hairy Bob

Hairy Bob

Well-Known Member
Ouch! That's some mould-inviting humidity there! You don't want it above 70% if you can help it, 40-60 is better until the final two weeks of flowering when you should get it as low as possible to increase resin production.
If your ambient temps are 83-87, I would seriously look at a/c, which should also help with humidity.
Or just grow enough through autumn and winter to last you though the summer!
 
litljohn

litljohn

Well-Known Member
raeman1990 said:
Thanks, i had thought of running it at night, but unfortunalty its about 87 with 100% humidity at day and like 83 with 80% humidity at night, so the temps never drop in the room more than 1-2 degrees. but fall is coming up so maybe i will do that later in the year.
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you should try the church strain from green house seeds.its really mold resistant,easy to grow and really bushy.i grew 2 of these under 1 150 watt hps and high temps was 85-90 and humidity was 80-85 and it grew great.check out my link and you can see how my grow is going.
 
R

raeman1990

Well-Known Member
Hairy Bob said:
Ouch! That's some mould-inviting humidity there! You don't want it above 70% if you can help it, 40-60 is better until the final two weeks of flowering when you should get it as low as possible to increase resin production.
If your ambient temps are 83-87, I would seriously look at a/c, which should also help with humidity.
Or just grow enough through autumn and winter to last you though the summer!
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haha no, no, no

the temps OUTSIDE are in the high 80's/90's, the temps in my room are 78-82 with 40-50 % humidity
 
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