|02-15-2013 04:47 PM|
|HD Blazingwolf||Their output is high, but the quality of color changes if im not mistaken|
|02-15-2013 03:59 PM|
Check out this article: http://www.lrc.rpi.edu/programs/nlpi.../lat5/pc1a.asp
The average life span of most T5s and T8s is 20,000 hours. That's like 5 years. Even after 40 percent of their life span if used up (22 months) T5s still have 94% output. So if you're changing bulbs every year, or even worse, every 8 months, your are spending a great deal of money to regain a couple percentage points.
The article is ten years old, but I think that makes for an even stronger case as bulb quality and efficiency has only improved over the years.
|02-15-2013 12:35 PM|
well are the HO or normal output? at 20 bux a bulb i will replace mine when their lifespan hours have been met
which on two of my bulbs will be about 9 months
and 4 of them being on half the time will be 18 months
|02-15-2013 06:39 AM|
|02-15-2013 06:36 AM|
Amazon sells open box bulb for a very low price.
I got two CF bulbs for $10+ each. Free shipping when I reached $25 total order.
These bulbs are Coralife Brand which would sell on ebay for I think over $30 each shipped.
|02-15-2013 05:29 AM|
|Bubba Shrimp||I bought 4 for $40 Actinic and 12K off of ebay I going to see if there is any difference between the LFS ones and the ebay ones for life span. The LFS sells theirs for $40 each!|
|02-15-2013 04:06 AM|
I have CF bulbs that I forgot they are over 2 years old. I just had them changed last week.
Ive seen a lot of the difference on plant growth and lot more pearlings than the old ones.
|02-15-2013 03:42 AM|
|Aquatic Delight||i try to do it once every 8 months or so. but i doubt it really depends on how often i actually remember to do it.|
|02-15-2013 03:07 AM|
How often do you change your bulbs?
Just wanted to see what other members are doing? I have a T5 set up, how often to change the bulbs?