Too much light for a tent?

**Tabbatha** · 18-06-11, 05:20 PM

Hey, guys.

I've a question I'm hoping you can help answer..

I'm using a Budbox Xl (1.2x1.2x2m) and am going to upgrade the lighting at month end. After a few recent threads here I've decided to get a 600w Digital Parabolic. I'm also getting a 5" Ruck fan/filter (I think).

Now.. here's the thing..

I'm thinking of ALSO using my current 250w kit to add a MH bulb into the tent in addition to the 600w HPS to give some blue light.

In total that's going to be 850w. Do you guys think that'll be too much heat for the tent, and if not do you think a 5" fan will be enough to remove the heat or will I need to go bigger than that?

Thanks for ya help folks.

**Mr Swilly** · 18-06-11, 05:22 PM

try it on a dry run and check temps
id say 600 is plenty in that space

**Forest** · 18-06-11, 05:22 PM

your need more than a 5 inch ruck i think for the summer and a bigger fan might mean to much neg pressure you may need a input fan as well imo

**ChronMan** · 18-06-11, 05:23 PM

i run a 6" RVK with a 600w HPS and temps were around 28c

**Tabbatha** · 18-06-11, 05:30 PM

Thanks for your help so far, guys.. but.. shit.. I've just checked the prices for a 6" and it's an extra £85 on top of the 5" price!! That puts me over budget so it's a no no for now.

Ok.. so I'll leave out the 250w and just use the 600w for the tent, and re-commission my old drobe for the 250w and use that for some vegging.

So, do u guys think I could just scrape by with a 5" fan and the 600w bulb? Bear in mind I'm using a parabolic reflector which, as I'm led to understand, helps reduce temps.

Thoughts?

Originally Posted by G-Man

...a bigger fan might mean to much neg pressure you may need a input fan as well imo

Agreed. I've got that covered by using a PC fan for intake.

**ChronMan** · 18-06-11, 05:34 PM

yes i think youll be okay mate! get a 4" intake fan for fresh air source. and a big rotating fan

**Mr Swilly** · 18-06-11, 05:34 PM

i think you would be fine. you can reduce temps by extracting under the bulb. so ducting positioned appropriately. may be difficult with a parabolic, but worked well for me with a diamond, i just hung the ducting from the reflector , which didnt interfere with the light spread.

**Tabbatha** · 18-06-11, 05:37 PM

Nice one, chaps. Those votes of confidence are good enough for me.

**up2nogood** · 18-06-11, 05:39 PM

you be ok..I had a 600w hps and a 5inch ruck fan..also a desk fan inside and temps were about 27c to 29c but that was in quite cool weather like we are having now,expect a increase in temps inside your grow tent when it gets hotter outside..expect up to 35c

**Forest** · 18-06-11, 09:14 PM

you got the hottest mths coming now be prepared ! there's a good guy sells fans on ebay (tinkersden04) always got em there 4 of all sizes just coming up they are always system air or ruck some time vents, i buy all mine from him saves a packet. bigger fans are quieter they are cos you can slow em down might be worth it
still you wont know until you try it bro thats all you can do ! try it