Vegetation stage needs 18+ hours of light so 18 hours on 6 off
Flowering stage needs 12/12 so 12 hours on, 12 hours off.
Unless of course you have an Auto strain.
Hope this helps
Fungus Gnats then mate, Look around for a recipe to kill them there's plenty on this forum.
You want to exterminate them ASAP before you have a full on infestation !
Thanks for the speedy reply +rep for that.
Just wanted a guideline, Think the 250w will be the best option considering my space.
Many thanks.
Do you know the average lumen output of a 250w hps?
Im thinking of a 250w or 400w HPS for my grow?
Getting a 5" inline fan for exhaust.
39" x 13.5" x 80"Height
Can anyone give me a rough guideline on which bulb/ventilation would be best for my grow space
Any help appreciated.