buds not getting bigger

I have six girls undre a 150W HPS and am on day 21 of flowering. the buds look great but they are not getting any bigger. Watering with bloom Fert ever 3-4 days. Do i Need more light?

They don't start to fill out until the last few weeks.

In my opinion, you need a lot more light.

Get yourself some lamp cords and hang 3 or 4 100 watt daylight CFLs around your canopy.

It will give you more light and round out your light spectrum without spending a big chunk of change.

You'll see a burst in growth in a day or two.

Good Luck.

u got 6 plants under a 150 watt hps?? a 150 hps is good enough for 1-2 plants max,,so i dont know what kinda yield yr gonna get doing that with 6

thanks for the tips let you all know how its doing with more light. Is 400w HPS better. this is my first grow and still fine tuning things as i go.

newblood said:

thanks for the tips let you all know how its doing with more light. Is 400w HPS better. this is my first grow and still fine tuning things as i go.

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You have way too many plants under your light. Crowding is not good. 1-2 plants is ok, but you will get alot more dense bud with a 400 watter. Better yet, find yourself a son agro 430 watt hps bulb by Sylvania. Its called a son agro. It has the added blue integrated in the bulb. Run that bulb, and you will never go back to an everyday 400 bulb. Best of luck buddy

I don't see where he said how big his plants and grow space are. How about asking before jumping to a conclusion?

Newblood, you'll notice a lot of elitism on this forum.

my spot is 3 feet by 1.5 feet will post pics soon