do inline fans stay on 24/7 for hps systems?

title kind of says it im getting a 400 watt hps for flower 12/12 lighting hours should i keep the inline fan on 24/7 or just turn it off when lights go out sense there will really not be any heat

fresh air circulation is good, provides exchange of co2 which makes the plants grow

i turn off the fan connected to my cool tube and leave the exhaust and circulation fans on myself. Air flow is important.

I have my 6 inch inline fan on a timer, it goes off when the light goes off. Never had a problem, I do leave a osculating fan on 24/7 inside the tent. You see my grow in the link below.

Mine runs 24/7. It cools my HPS and also filters the air going out with carbon filter.

i do the same as bigbuddahcheese, i do turn it down when i remember or get annoyed of it when the lights are off. but for the most part its always on, along with my 6 in inline.

BigBuddahCheese said:

Mine runs 24/7. It cools my HPS and also filters the air going out with carbon filter.

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Same here. But only once I'd bought a quality fan designed to run 24/7, I was worried the cheaper one might of burnt out.

I run mine about 22-23 hours a day and it's turned down very low right now because of the weather, it helps keep the tent warmer. lol my 6" clip on fan probably moves more air then my carbon at the moment.