Can anybody tell me if there is maybe a nominal temperature increase above ambient in a 4 x 4 x 7 tent?
The intention is to use a 400W MH in veg and 600 W HPS in flower. Currently there are fluoros and ‘daytime’ is 22 - 27 Celsius and 55-65% humidity. I am expecting something like 10-15 Celsius (or eq.) but I could be a long way off.
Any indication appreciated.
There are far too many factors to give a definitive answer. The ambient temperature outside your tent and your exhaust ventilation are the key factors.
If you use an air-cooled reflector (this is a must) with a ballast outside the tent and have a decent “outside the tent” environment and adequate ventilation, the temperature increase should only be a few degrees.
On a side note - since you are going to be using a dimmable ballast anyway, you should get a 600 watt MH bulb. You can dim it to 75% but you still have the option to crank it up to 100% when you want it.
Air cooled, Air cooled, Air cooled. Can’t say it enough, your going to want to get one it will make your life way easier.
Air cooled hood and 400 cfm exhaust is a must for 600 watt MH/HPS to keep temps in the sweet spot, and best to exhaust to outside/attic/ or different room, don’t want to drive up temps in the room the tent is in.
Thanks guys! Hadn’t considered a vented hood - will have to. My biggest issue is availability of equipment - nobody has stock locally! Frustrating as hell!! Might have to get creative with a window insert panel - was trying to avoid that…
This is the window exhaust kit I use to exhaust one of my tents out the window.
https://www.amazon.com/gp/product/B07R65112D/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Thhat is a handy kit. Wil look into that. Thanks!