View Full Version : IS THIS ENOUGH LIGHT
putt28
05-18-2009, 03:15 AM
i have a 21" wide by 4ft tall cab i made. will 10 26 watt(6500k) cfls (16000 lumens)be enough light for 4 plants in 3gal square buckets im using ffof for soil and how many (2600k) will i need to flower for that space sorry no pics...and is this the best soil i can buy?
headshake
05-18-2009, 03:52 AM
is this a 3 dimensional cabinet?
if it's 21" x 21" then 21/12" = 1.75 x 2 = 3.5 x 5000 = 17500 lumens
or in english you have 3.5 sq ft. you want a minimum of 5000 lumens per. so you'll want 17500 lumens, or about 11 bulbs. those are gonna run at *1600* lumens, not 16,000!
you'll want at least the same of *2700*K bulbs for flower. the more the better!
you'll be able to grow some nice plants.
i can't speak on the fox farm soil, as i have never used it. i'm sure it will do fine. i use miracle grow and don't have problems. more money doesn't always need more better.
make sure you have a way to test yoru pH. that is way more important than what type of soil you buy (for the most part).
-shake
Italiano715
05-18-2009, 03:53 AM
is this a 3 dimensional cabinet?
if it's 21" x 21" then 21/12" = 1.75 x 2 = 3.5 x 5000 = 17500 lumens
or in english you have 3.5 sq ft. you want a minimum of 5000 lumens per. so you'll want 17500 lumens, or about 11 bulbs. those are gonna run at *1600* lumens, not 16,000!
you'll want at least the same of *2700*K bulbs for flower. the more the better!
you'll be able to grow some nice plants.
i can't speak on the fox farm soil, as i have never used it. i'm sure it will do fine. i use miracle grow and don't have problems. more money doesn't always need more better.
make sure you have a way to test yoru pH. that is way more important than what type of soil you buy (for the most part).
-shake
AHHHHH I searched everywhere for the equation and couldn't find it so I gave up!! LoL glad you answered cause I couldn't!
P.S. 5000 Lumens per is for optimal growth, I think it's 3000 that is the minimum, but I could be wrong.....
headshake
05-18-2009, 03:58 AM
no worries italiano! it you have inches, divide by 12. multiply length times width = sq feet.
and remember 5000 lumens per. and that's all you have to remember. lol!
-shake
putt28
05-18-2009, 04:02 AM
AHHHHH I searched everywhere for the equation and couldn't find it so I gave up!! LoL glad you answered cause I couldn't!
P.S. 5000 Lumens per is for optimal growth, I think it's 3000 that is the minimum, but I could be wrong.....
thank alot but it is three dimensional its 4ft tall and 21" wide all around
Powered by vBulletin® Version 4.2.5 Copyright © 2025 vBulletin Solutions Inc. All rights reserved.