LED's And The Box Of Weeds

[chin_monster]

I do believe that these are the first commercial modules that I've seen that are directed towards the freshwater market, rather than the reef aquarium side of things.

Kessil unveiling A150W Amazon Sun daylight version

While I'd dearly love to use a pair of Maxspect Mazarra P-series ( Maxspect Mazarra P Series LED Lighting | CoralVue ) for a 36 X 18 X 36 display vivarium that I've been slowing building and plotting for most of the last year, these new properly spectrum'd Kessil light cannons are looking to be much more budgetarily friendly and practical.

[EvilLost]

I'm offering LED units custom built for vivaria units....not ready to do larg scale production yet but I'm hoping to get there

[gex23]

Originally Posted by chin_monster

I do believe that these are the first commercial modules that I've seen that are directed towards the freshwater market, rather than the reef aquarium side of things.

Kessil unveiling A150W Amazon Sun daylight version

While I'd dearly love to use a pair of Maxspect Mazarra P-series ( Maxspect Mazarra P Series LED Lighting | CoralVue ) for a 36 X 18 X 36 display vivarium that I've been slowing building and plotting for most of the last year, these new properly spectrum'd Kessil light cannons are looking to be much more budgetarily friendly and practical.

I disagree - TMC (The Marine Centre) have been selling LED units for freshwater tanks / plants for a while now (AquaRay GroBeam 500 and 1000 ND units).

I have two units, and I know two other members on this board who use them to good effect too.

[mitcholito]

I dont understand how they can sell these lights without telling much light they put out.
The most valuable info is the lumen/Watt ratio (as long as the light colour is acceptable).
Without that its impossible to tell how effective and good a fixture/light is.

[jpstod]

Originally Posted by mitcholito

I dont understand how they can sell these lights without telling much light they put out.
The most valuable info is the lumen/Watt ratio (as long as the light colour is acceptable).
Without that its impossible to tell how effective and good a fixture/light is.

Because most people do not understand or care what the difference is.

[EvilLost]

same reason they get away with charging the prices they do

being the LED fanatic that I am....I went ahead and found that info for you..

http://www.kessil.com/products/a150_...rium_light.php


they are all blue heavy (even the amazon sun is lacking in reds) and not any good for non-aquatic purposes imho. the H150 grow lights are a bit better...but even then they are designed for growing so its too red heavy for our uses.

The fact that Kessil uses self-branded LEDs and purposely does not give out lumen or spec-sheets on them is HIGHLY questionable and certainly raises red flags to me

EDIT: I have contacted them for their spec sheets and lumen information. Lets see what they say...

[mitcholito]

The fact that Kessil uses self-branded LEDs and purposely does not give out lumen or spec-sheets on them is HIGHLY questionable and certainly raises red flags to me

Does the same for me. But its very common. I'm a bit surprised that the reef/salt water community dont react to this more than they do. They are otherwise the ones that leads the way when it comes to light and lighting.

I have contacted them for their spec sheets and lumen information. Lets see what they say...

Perfect..will be interesting to se what they say

[EvilLost]

My letter to them: (I felt like I was pretty direct about the information requested wasn't I?)

Hello,

I was interested in your growlight LEDs. Your website has some minor information on the color spectrums, but you give no information on the LEDs, lumen, or PAR readings. I was also unable to find any spec/cut sheets.

Can you please either direct me to this data or forward it to me? Particularly I am interested in your growlights, but if you could send me the info regarding your aquarium lights as well that would be helpful.

Thank you,

Mani Arabi

This was the response:

Hi Mani,

All the information we have is published on our website. Can you tell us a bit more on what you are doing and why you need the optical spec info so we can figure out how to help you.

LED's performance is spectrum specific, parameter's for traditional lighting does not make too much sense for LED sometimes.

LoL? I am waiting on a follow up from that still....

[mitcholito]

Very strange answer IMO. Why not just present the facts for people in a straight forward manner instead of hiding and concealing it?
To me it sounds like the specs is not that impressive when they do like this.

[Johno2090]

Originally Posted by gex23

I disagree - TMC (The Marine Centre) have been selling LED units for freshwater tanks / plants for a while now (AquaRay GroBeam 500 and 1000 ND units).

I have two units, and I know two other members on this board who use them to good effect too.

Just wanted to +1 to the TMC Grobeam they have been available for at least a year and a half and I've been using them for that long to great results.

I'm not sure why you would want to know the Lumens for a Given LED as they are not really comparable to Incandescent bulbs as I understand it the Lumens is the sum of all light that's given off by a bulb in ALL directions. So LED's will always look duller to our eyes than the traditional bulbs we use. What you should be looking at is the Spectrum and the PAR rating (particularly the PUR) and the angle of the lenses. I have never bothered with Lumen/Lumens for LED's.

Of course I could be wrong!