Light Leaks?

OK I have grown before and I undersand the theory of 12/12 lighting for flowering. But Honestly... Total 100% darkenss for 12 hours for flowering. I mean how do outside growers account for moonlight during flowering? 98% is not good enough? OR is 100% NOT being retentive?

I'm sure ambiant light is ok to a point, not direct sunlight cracks , I'm sure that's bad, that's my opinion

I Agree with CiderSpy. I leave the door to my grow rooom cracked slightly during the day well(the girlies night) And i have never had a problem. Again like he said some ambient light is ok NO direct light!

any light = taking a chance
no light = being prudent

Illegal Smile said:

any light = taking a chance
no light = being prudent

Click to expand...

Like I said I fully understand the concept, but the 23 watt bulb in the next room that slightly leaks into the outer room of the grow room where i can barely see any light if I just sit in the room in the dark.

The same goes for my intake which has 2 90 degree bends (yes an upside down u shape) but a tiny amount of light might come in during a really sunny day IF I keep the shades open.

But even together there is nothing close to moonlight EVER in that room unless the grow lights are on

Medical user: I've been arguing that for more years than I care to remember ! Having grown for years outdoors in a small suburban garden before moving house I can tell you that these plants will aclimatise to whatever level of 'darkness' they get used to, in spite of outdoor garden lights and kitchen lights etc going on and off I never had a single hermie plant outdoors. Hermies are much more to do with genetics than the lack of total darkness at 'night'. Now I know that some will jump on me for this BUT its based on MANY years of growing indoors and out. When I read of growers sitting inside a grow box to check light leaks it makes me laugh

Use common sense and think in terms of 'nature', work with good stable genetics, and just make sure they are not subject to sudden bursts of artificial intense light...... you will be fine. Like you say moonlight is amazingly bright (full moon!) yet of course it does not cause any harm to outdoor plants, of course it doesnt.

Stable genetics are the key, that and common sense