Secret Jardin's DarkRoomII DR90 - choosing the right accessories for my second grow

Hello there fellow growers it's been a year since my last (and first) successful grow.
I want to "do it again", this time with the right hardware.

I bought SJ's DarkRoom rev.II DR90
WDH: (90c90x180cm)=1.5 sq.meter; (3x3x6 ft)=54 square ft

What I'm thinking:
To grow 6 (or more-I have 12 seeds in total) autoflowering plants:
2x Green-O-Matic - Green House Seeds
2x Bubblelicious - Nirvana
2x RedDwarf - Buddha Seeds

Now what I need to help out with is:
What light should I buy? 400W (would be handy for future grows with some non-auto plants), 250W or should I put together some BIG CFLs?
According to chosen light (yet to decide) - what is the optimal CFM value for my lights/grow/needs.

I am a bit worried about the temperatures. DarkRoom will be placed in a room with temperatures under 26°C (80°F) even in summer days temp. doesn't go over 29°C.

I am open to every opinion from experienced growers and I value every shared view.

Thank you,
TEoT

a 400w would bring some bigg buds. 250w likewise. more watts the better but consider amount of lumens too

temps should generally be 28max lights on and can drop to 20 with lights off

personally i'd go with the 400w HPS in a cooltube. no heat stress worries.

hope this helps

Thank you for your input, I am thinking the same thing right now

For that size tent you definitely want to go with a 400w light. MH/HPS would be the best but if you are only going to get one, then go with the HPS.

I decided for 141 CFM (240 Cubic Meters per Minute) carbon filter

along with 129 CFM TT fan

and this cooltube

I've found a pic that pretty much describes what I have in mind.

how did this turn out?? im doing my first grow with a dr90, 400 watt in a SunSystems Hood, and 340 CFM inline Blower....... i struggle with temps....what was your solution??? i had to end up running Inside tent>Thru Fan>thru Hood>Out Tent (and also had 1 small, 1 medium, 1 large fan blowing on the inside).... I tried passive intakes by opening all of the holes on the DR90 & the velcro straps but temps still touched 87-89 during lights on sumtimes.....So I eventually ran ducting from the house ac > into one of the one of the holes on the tent, and closed the rest of them......It seems to be doing the trick but the top of the plants is 82-78 and the bottoms are around 69-68......any idea on how to get a balance of temp??

SmokeyMcGuiver said:

how did this turn out?? im doing my first grow with a dr90, 400 watt in a SunSystems Hood, and 340 CFM inline Blower....... i struggle with temps....what was your solution??? i had to end up running Inside tent>Thru Fan>thru Hood>Out Tent (and also had 1 small, 1 medium, 1 large fan blowing on the inside).... I tried passive intakes by opening all of the holes on the DR90 & the velcro straps but temps still touched 87-89 during lights on sumtimes.....So I eventually ran ducting from the house ac > into one of the one of the holes on the tent, and closed the rest of them......It seems to be doing the trick but the top of the plants is 82-78 and the bottoms are around 69-68......any idea on how to get a balance of temp??

Click to expand...

Hi, I haven't started just yet. What CFM is your outtake fan?

You need at least 250CFM for this tent, plus matching rated filter if you decide to use one.

And then you need to take a close look at your intake temps and as long as those aren't exceeding 75F-80F you're golden.

GEt at least a 400cfm fan. THings will get hot really quick in a 54cu ft space with a 400 watts of HID light. Use the 200 for intake or refund.