Intake fan or just extraction fan?

[AMBISINGH]

Hi i have a secret jardin 150 tent. Carbon filter, rvk fan for extraction. Do i also need an intake fan or can i just leave a gap in the bottom of the tent for new air to flow in?

[Naxx]

with a 250w hps and 6" extraction you could get away with passive intake yes

[Bobby Digital]

i concur

[seanMcPot]

with a 600hps you'll need an in-take fan

[AMBISINGH]

IM EITHER GOING TO USE A 600 WATT HPS OR A 250 watt Quad Band PRO SERIES Led Grow Light (EQUIV TO A 800 WATT HPS LIGHT)

[Naxx]

Ok, use the 600w HPS full stop.... LED's are shit, it is not acutally going to be equal to an 800w HPS light and thats a fact... and now your using a 600w hps youll need a intake fan, a 4" RVK will do

[AMBISINGH]

On ebay its only showing me a car intake fan. What would i search for to find the intake fans for a grow tent

[AMBISINGH]

Im best off purchasing a speed controller also? So i won't need to monitor the airflow in and out and the temp + humid. The controller will do all tat for me and show me the humid + temp on the digital display?

[Bobby Digital]

if you got the cash m8 splash out on all the kit

[seanMcPot]

aint that the second time you've asked that or am i trippin???