hey guys,my g/b has 2 4" p/c fans at the bottom pushing air in,and a4" inline fan extracting,when ladies are asleep i have,2 small heaters at the bottom of the g/b to keep them warm during lights out,ok,i have the 2 p/c fans set to come on periodically [every 2 hours] this i hope will circulate air around box [g/b size 4ft highx7 sq ft area].question,should i also run inline as well,as i dont want them getting bud rot,which i beleive is possible with bad circulation,most grateful for any help on this one,regards twinkle

I'd leave the fans running 24/7 - certainly enough of them to at least maintain some airflow all the time - it certainly won't hurt them, and will bring in much-needed CO2, and guard against the dreaded bud rot

Hi Twinkle,


I agree with Farmweb

Yeppa leave the fans running 24/7.

All the best

SS

cheers guys,just the answer i was looking for,i'm not concerned about running costs,my worry was it would defeat the object of the heaters,thanks again they'll be on 24/7 from now on ,the ladies are 2 weeks in 12/12,so i must give them more ltc,regards twinkle

Got to slightly disagree to a point.

You do need ventilation all the time, at night to remove Co2 given off by the plants and to keep the humidity levels down. This does not need to be a huge air exchange, just enough to keep the air moving, I would say keep the computer fans on 24/7 and just run the RVK during the 12hr lights on period.

You are growing in a garden shed, if you have the RVK running during the night and its a foggy frosty night, [humidity could easily be 100% and well below freezing] your little tube heater will be working its nuts of just trying to keep the box warm let alone reduce the high humidity of the foggy outside air.

a bit of a quandary you have me in guys thinking hard,twinkle

I'd go with OT's more detailed advice - I reckon we sort of said the same thing (keep something running all the time)- but having the big one on only when the lights are on makes good sense

So would this be ok,to have 2 pc fans as intakes and 1 as an outlet,1 fan is 12v the other is 9v, i turn the 12v off during lights out.Leaving the 9v and the outlet fan running 24/7.....