How many plants should i put under a 400watt HPS?...

whitewidow2

whitewidow2

Well-Known Member
Hi guys im just wondering realistically how many plants i should stick under a single 400watt HPS in a grow tent...

What do you think... how many are people on here doing? And if i stick less in rather than maxing it out will i still get the same yield?

thanks.
 
AlwaysFUBAR

AlwaysFUBAR

Well-Known Member
I keep four under mine and they are doing great. You could go with more. But I would think that 6-8 would be max. It all depends on the height and how bushy they are.
 
whitewidow2

whitewidow2

Well-Known Member
Im gonna let them veg for two months and im using soil and biobizz nutrients - i have been using cfls so far but gonna make the change to HPS so not sure what to expect...
 
greengrowthexpert

greengrowthexpert

Active Member
1.5 from the plant and you could do up to 12-14 plants with a 400w HPS if you plant the pots correctly. 2-3 vertical rows along with the light. Good luck, and happy growing.
 
brasmith

brasmith

Well-Known Member
Pretty as many as you are comfortable growing, like GG the expert said. The most I have vegged under a 400 watter was 12 and they did awsome, only 4 females in hte end.
 
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