Fluorescent grow light, comparison test

[Steve66oh]

Last week, I saw a thread here from someone who compared 4 different grow light tubes (against each other and sunlight) by growing 5 sets of seedlings under controlled conditions. Now, I can't find that thread. Can anyone provide a link to it? Thanks!

 

[juanitos]

think i remember this thread i'll look... hmm can't find it
 
experiment flouro grow room vs greenhouse sun/hps
experiment with ga3
experiment cups vs bags
hps vs cfl

 

[Steve66oh]

I found it! It wasn't a thread here, just a link within a comment on a thread - and the hyperlink is spelled "flourescent" (Baker lights?), so it didn't turn up in searches. I'm also going to post this link in the "Light 101" thread: fluorescent comparison

 

[Jetchuka]

All great links, thank you for posting them. I had read that fluorescent comparison a couple of years back, it convinced me to mix in a few GE kitchen and Bath tubes along with purple hue lights (red+blue spectrum)..
 
And since my 250w CFL order was mysteriously canceled, i'll now either pickup a 4-buld T5 assembly, or a 250w HPS. I really like the results in that 150w HPS comparison btw, talk about efficient.

 

[scratchzilla]

I love my 250w HPS. Just throwing that out there.

 

[Jetchuka]

Scratchzilla, your endorsement nearly convinced me, unfortunately i have to be price conscious for now, so i got this configurable 4-bulb T5 setup instead:
 
It's hard to see in the pic, but each tube has it's own narrow reflector, and it was hard to argue with $85 shipped.
 
A 250w HPS would have set me back around $130, because i would only get one with a magnetic ballast (no RFI). It would have sat next to all of my cable TV equipment in the basement.
 
(ends the thread hijack)