kelvin

Hello All, I am wondering what color temperatures are used to mimic sunrise and sunset. All I have been able to find is that sunrise tends to be a little lower, maybe 5500K? While full sunlight is around 6700K. Anyone have any experience manually inputting color varying color temps...

I need a new pl-s lamp for my nano armature. The original Dennerle 11 watt tropical day lamp is very expensive but i found a much cheaper Philips branded pl-s light. The dennerle is 6000k The Philips is 4000k I know kelvin does not have say much about the ability to grow plants so i've...

I have a Current USA freshwater LED PLUS fixture rated at 6500k. I have Java Fern, Anubias,Water Wisteria, and a red flame sword. They are all moderate light or lower and hardy plants. The question is , am I overdoing it with the 6500k ? What is 6500k considered? (Bright, moderate, low lit) I...

I already own this. http://www.amazon.com/Feit-Electric-PAR30-HP-LED/dp/B002Q8H99O And I was wondering if this would grow plants of any kind? The Kelvin ratings pretty low and the Lumens aren't that great, so I assume the answer will be no or low light plants. Thoughts?

hey everyone i was wondering if anyone has had any luck with this LED fixture? or if not could anyone suggest some alternatives http://www.catalinaaquarium.com/store/product_info.php?cPath=71_167&products_id=1633

Hi, Im using x4 T5 lighting with Kelvins of 14000K and Sylvania Gro-Lux 8500K. This is out of range isnt? I read 5500K-6500K midday sunlight thus the recommended range. Is it important to keep it within range? Are theses K's contributing to my poor results? (cuz i got EI and Co2 covered).

Hello TPT'rs, I wanted to start a conversation about bulb spectrums. Here's a few things I've learned about lighting, in hopes that it might make things easier on someone starting out. Trying to figure out how much light I needed was the first roadblock I came to. Luckily I found this...