600w hps good enough?

[Rob2522]

So I've got a 600w hps for my 80x80x160 tent and I'm hoping to do 4 indica plants from seed to harvest. Would this light be OK for this size tent?

 

[twalte]

I think you could do four. I’d keep them in a 4x4 footprint under the light.

 

[coreywebster]

As long as you can keep temps under control it will produce.

 

[Kassiopeija]

This is pretty much light & heat for a 80*80 area. If you do this, you need to take extra care of ventilation and heat controll. Or upgrade to a 1.20*1.20 tent.

 

[Rob2522]

I'm managing the temp to 23.5c. I've got he 80x80 due to space that I'm limited to. Maybe I might change light to a lower wattage. Thanks for posts guys

 

[twalte]

I'm managing the temp to 23.5c. I've got he 80x80 due to space that I'm limited to. Maybe I might change light to a lower wattage. Thanks for posts guys

I wouldn’t go to a lower wattage...if anything, you don’t have enough light for a space that big. That’s why I recommended to limit your growing footprint to where the light is the most intense.

edit....are you talking centimers or inches when you say 80x80?

 

[Herb & Suds]

More light not less
I run 4 600 watt HPS in a 10 foot by 10 foot

 

[Rob2522]

I'm talking 80cm.

 

[.Smoke]

I'm talking 80cm.

You're good in that space.
Gives you roughly 66w per sq/ft.
50w is plenty.
I get 57w per sq/ft and just now lowered my lights on day 47 with Autos from 36" to 24" ...600w HPS and 315w CMH in a 48"x48". Make sure to get an air cooled hood or a cooltube. Otherwise your tent will be 90F+.

 

[JSB99]

So I've got a 600w hps for my 80x80x160 tent and I'm hoping to do 4 indica plants from seed to harvest. Would this light be OK for this size tent?

600w light is a good size for that tent. It's said that a 600w can cover a 4' x 4' (122x122) footprint, but I find the outer edges to be lacking. Should work great for you. You'll definitely have to have an inline exhaust fan and some circulation fans.

 

[SPLFreak808]

600 % 7.5 = 80w/ft

 

[skinitti666]

You're good in that space.
Gives you roughly 66w per sq/ft.
50w is plenty.
I get 57w per sq/ft and just now lowered my lights on day 47 with Autos from 36" to 24" ...600w HPS and 315w CMH in a 48"x48". Make sure to get an air cooled hood or a cooltube. Otherwise your tent will be 90F+.
View attachment 4422436View attachment 4422437View attachment 4422438

Why dont you trim your leaves I'm doing a 1st time scrogg and I trim my leaves

 

[JSB99]

I'm managing the temp to 23.5c. I've got he 80x80 due to space that I'm limited to. Maybe I might change light to a lower wattage. Thanks for posts guys

Those temps are good, and might benefit from going closer to 26c - 27c. You've got the right light.

 

[.Smoke]

Why dont you trim your leaves I'm doing a 1st time scrogg and I trim my leaves

I do.
Just not anything in direct light.
Just the under canopy...

 

[skinitti666]

I do.
Just not anything in direct light.
Just the under canopy...
View attachment 4422546

Ok I see I like how it's done I'm just trying to learn more about scrogging and lst

 

[diggs99]

600hps is real nice for a 3.5x3.5 canopy, full 4x4 suffers around edges a little but still good.

It did well for me in my 4x4

Is your fixture a cool tube or air cooled hood? Or just the old school batwing?

Heat management will be one of your main priorities , I had 440 cfm exhaust running half to exchange air but I still ran into temp jumps into 80s at times and the plants did not like that at all.

Best of luck

 

[JohnDee]

As long as you can keep temps under control it will produce.

see below

You're good in that space.
Gives you roughly 66w per sq/ft.
50w is plenty.
I get 57w per sq/ft and just now lowered my lights on day 47 with Autos from 36" to 24" ...600w HPS and 315w CMH in a 48"x48". Make sure to get an air cooled hood or a cooltube. Otherwise your tent will be 90F+.


View attachment 4422436View attachment 4422437View attachment 4422438

I redid the math and get 85 watts.sf...about twice what it should be.
JD

 

[diggs99]

see below


I redid the math and get 85 watts.sf...about twice what it should be.
JD

Oh i thought it was a 4x4 for some reason, ya i agree with John, thats a bit on the extreme side at 85w/ft2

 

[Rob2522]

600hps is real nice for a 3.5x3.5 canopy, full 4x4 suffers around edges a little but still good.

It did well for me in my 4x4

Is your fixture a cool tube or air cooled hood? Or just the old school batwing?

Heat management will be one of your main priorities , I had 440 cfm exhaust running half to exchange air but I still ran into temp jumps into 80s at times and the plants did not like that at all.

Best of luck

My light is the old school one as I got it given to me by a friend to get started this is my first one I've ever grown before. Temps are fine with circulating fans