Which LEDs for planted tank? - Page 3
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Specific Aspects of a Planted Tank > Lighting

Thread Tools Display Modes
Old 11-23-2011, 09:35 PM   #31
Planted Tank Guru
Hoppy's Avatar
PTrader: (75/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 18,863

1000 lumens produce 1000 lux at one meter distance. Multiply lux by .014 to get approximate PAR for cool white fluorescent light (close enough to LED light). So, that 1000 lumen LED bulb should produce 14 micromols of PAR at one meter distance, but that is assuming the bulb emits light through a full spherical angle around the bulb. It doesn't. The light is concentrated into about a 60 degree cone, which is about 1/36 of a full sphere (I think). Therefore the PAR should be about 36 times higher or 36 x 14 = 500 micromols of PAR at a one meter distance. If all of that is calculated correctly, you should get an awful lot of light from one bulb. (At 20 inches, it would be 4X 500!)
Hoppy is offline   Reply With Quote
Sponsored Links
Old 06-09-2012, 03:05 AM   #32
Algae Grower
airbagged's Avatar
PTrader: (0/0%)
Join Date: Jun 2012
Location: homestead, fl
Posts: 13

I am currently using the aquaray grobeam 1000 on a 180 gallon planted they are amazing and the growth is insane!! they work excellent i was hesitant myself to put out the $1500 for 4 units and a controller but it was worth it!! check out my pic and see my setup. I also use Panorama freshwater leds as a secondary lighting system but the grobeams are fine without it. they are dim by contrast
airbagged is offline   Reply With Quote

boostled, led, par30, truelumen pro

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 06:47 AM.

Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012