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Discussion Starter #1 (Edited)
Hi Everyone. So today I had the pleasure of being able to get par data for the Beamswork DA FSPEC LED and also the Beamswork DHL 30 6500K. I have one of each 30" and also 48". So for the Beamswork DHL and DA FSPEC 30" long lights test I used a 20 Gallon long tank. So from Light to sensor the furthest I was able to go was 13". For the 48" DHL and DA FSPEC Lights I used my 60 gallon 24" tall tank. I must say I am quite impressed as to how powerful these Beamswork lights are. This is quite some PAR that they are putting out to say the least. So without further delay lets get the party started :nerd: :wink2:

Here is the overview graph of the two 30" lights and two 48" lights PAR data. Below is the specific reading per debth.



First sample I took par data of the DA FSPEC at 13" with no water so we can get a feel for the difference how much water amplifies par.

30" DA FSPEC only

13" No water 0" offset
70 par


13" 0" Offset(This and rest of the readings are in Water)
100 Par


13" 6" Offset
99 Par


12" 0" Offset
111 Par


12" 6" Offset
91 Par


10" 0" Offset
113 Par


10" 6" Offset
99 Par


8" 0" Offset
124 Par


6" 0" Offset
164 Par


DHL 6500K 30" only

13" 0" Offset
85 Par


13" 6" Offset
81 Par


12" 0" Offset
91 Par


10" 0" Offset
110 Par


10" 6" Offset
83 Par


8" 0" Offset
139 Par


8" 6" Offset
102 Par


6" 0" Offset
186 Par



DA FSPEC and DHL combined

13" 0" Offset
174 Par


12" 0" Offset
187 Par


10" 0" Offset
205 Par


8" 0" Offset
233 Par


6" 0" Offset
235 Par


DA FSPEC 48"
22" 0" Offset
PAR 42


20" 0" Offset
Par 44


18" 0" Offset
Par 48


16" 0" Offset
Par 51


14" 0" Offset
Par 52


12" 0" Offset
Par 55


10" 0" Offset
Par 59


8" 0" Offset
Par 63


DHL 5500K 48"
22" 0" Offset
PAR 56


20" 0" Offset
PAR 60


18" 0" Offset
PAR 65


16" 0" Offset
PAR 67


14" 0" Offset
PAR 71


12" 0" Offset
PAR 73


10" 0" Offset
PAR 81


8" 0" Offset
PAR 89



DA 48" and DHL 48" Combined

22" 0" Offset
PAR 82


20" 0" Offset
PAR 83


18" 0" Offset
PAR 91


16" 0" Offset
PAR 96


14" 0" Offset
PAR 112


12" 0" Offset
PAR 116


10" 0" Offset
PAR 129


8" 0" Offset
PAR 135


To show the brightness for all the different lights. Thanks @jeffkrol for helping put the below tank shot pics together like this. Makes comparing brightness MUCH easier

For those that want to be able to dim the lights this dimmer works for both models both sizes. https://www.amazon.com/gp/product/B008FC04I8/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
 

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Nice! Hopefully this proves beamswork is just as good as finnex lights in the par department, if not better. I own one of these and it's super bright. Thank you for the PAR readings.


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Discussion Starter #3
Nice! Hopefully this proves beamswork is just as good as finnex lights in the par department, if not better. I own one of these and it's super bright. Thank you for the PAR readings.


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I will be able to prove if it is or not better par wise than the finnex 24/7 tomorrow. It's play with kids time for now. Hopefully this data helps.


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thanks for posting the par data. one question, par for the da fspec at 13" 6" offset is higher than 13" 0". could you possibly re-check? thanks.

there is at least one other example where the par was higher at the offset than directly under, namely dhl 65k at 13".

rival to finnex? par-wise i'd say rival to kessil a80 tuna sun!
 

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Fie comparison:


Side note: Lux to PAR conversion looks pretty steady at LUX / 37-ish = PPFD.. but low compared to old estimates
Divisor is expected to be 67-ish.. Hmmm..odd.
PAR values would be 1/2 those approx..
Not trying to throw any wrenches in here.. Seneye has been tested and compared to other PAR meters and found accurate.
http://www.reefcentral.com/forums/showthread.php?t=2626700&highlight=seneye+apogee

From this data and the above link comparing it to an Apogee..the ratio is the same and PAR is accurate.
Either the old "assumption" is way off or Seneye underestimates LUX..

Get a phone app for lux.. see if it compares (might use the same tech though..)
A real LUX meter would be more definitive..

At this point can't say PAR is wrong..
Then the only current idea is the Seneye is under-reporting LUX by almost a factor of 2..
 

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Discussion Starter #7
Ok so this was a lot harder than I thought it would be. I got the DHL and DA FSPEC 48" Data done. I had to do a serious trimming because some plants and especially my swords were just blocking too much light. The 12"+ Sword leaves are no joke. So I updated the first post with the Beamswork DA FSPEC and DHL 6500k 48" lights on my 60 gallon high tank. I also udpated the overview PAR graph at the beginning to show both the 30" and 48" DA FSPEC and DHL lights. I used a mount to ensure that the sensor was as stable as possible at all locations. Enjoy
 

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Ok so this was a lot harder than I thought it would be. I got the DHL and DA FSPEC 48" Data done. I had to do a serious trimming because some plants and especially my swords were just blocking too much light. The 12"+ Sword leaves are no joke. So I updated the first post with the Beamswork DA FSPEC and DHL 6500k 48" lights on my 60 gallon high tank. I also udpated the overview PAR graph at the beginning to show both the 30" and 48" DA FSPEC and DHL lights. I used a mount to ensure that the sensor was as stable as possible at all locations. Enjoy
now for true accuracy and to become junior scientist... just repeat it 1/2 doz. times... ;)
 

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Discussion Starter #9
now for true accuracy and to become junior scientist... just repeat it 1/2 doz. times... ;)
Lol I know right :wink2: Oh if you want to add this data to your existing graph feel free.
 

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Discussion Starter #10
In case you all were wondering which light or combo of lights I am going to use for my 60 gallon well so I did not have to decide between any of them I am using all three on my tank. After all I like the Beamswork lights and also my Finnex 24/7.

 

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How do you like the color on the FSPEC? Looks like the main LEDs are 10,000K, is it too cool by itself? I'm thinking of using this light on a 60 gallon cube, and only need lowish light.
 

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Discussion Starter #13
How do you like the color on the FSPEC? Looks like the main LEDs are 10,000K, is it too cool by itself? I'm thinking of using this light on a 60 gallon cube, and only need lowish light.


I actually like it. It is the brightest of all three lights. It is actually the coolest of the three lights. Finnex hottest followers by warm dhl. Yes the fspec is 10,000k which some will not like but I actually do. My plants absolutely love these lights and are pearling like I have never seen them.




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Discussion Starter #14
what's the total number of watts for all 3 fixtures? thanks.
Finnex 24/7 is 46.2 Watts
Beamswork DHL 6500K is 63 Watts
Beamswork DA FSPEC is 60 Watts

Total watts with all three is 169.2 :)
 

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Discussion Starter #18
OH! Sorry Full Tank Shot. Thanks!


Lol no problem I should of known. Well there you go. I really like the brightness of the fspec. And the fact it has all the white, blue, green, and red led's. and actually I was wrong above the dhl is a bit brighter to the eyes.


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Need a shot of each for color comparison.. ;)

 
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