can anyone answer a lighting ?....

ok so can someone tell me how long i should give my plants in flower using a mh? example: grandaddy purp is a 12 week flowering plant under hps, what would it be under mh?

Why wouldn't it be 12?

its the same but you just got to look at your buds to see where they are. Thats 12 weeks period is a guestimate

im doing a side buy side grow now, with both a m/h, and hps. both are 400watt, to see witch one flower the best. the plants im useing for this test are all clones off a hawaiian snow. witch i have budding now she in her 8 week.

GrowingfortheGold said:

Why wouldn't it be 12?

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because the mh is mainly for vegging it is full spectrum. im still new to indoor flowering. i have always flowered my plants and put them in the woods (lol i guess this could be the problem) and it seems to take my plants a extra 3-5 weeks before ready. im going to get a hps just dont have the flow right now.