|Topic Review (Newest First)|
|07-27-2013 05:08 AM|
Thanks for the info.
We take our manufacturer's submitted data and our Apogee readings and average them. Both readings are near identical but we find it fair to take the averages. I'm assuming you are recording higher PAR because your readings are being recorded through water?
And Jester, sorry for the threadjack ...if you have any questions about the Finnex fixture, please let me know. Finnex, BML, Current, and others... it's a great time to be an end user with all these strong lighting choices these great companies have available now.
|07-26-2013 11:12 PM|
sure, on a 24" long light (ray 2 dual 7,5k) sitting right on top of a 60p.
Right below water surface 485 par
middle of tank 117 par
substrate 70 par
now its possible my clubs par meter is wrong, but everything else i tested with it was consistently accurate. These results were taken with the apogee par meter. I will be interested to see what the o.p's readings are. Im not stating the finnex light is poor, it works very well for many, i just wasn't a big fan of the par graph, and decided on something a little more progressive. I wouldn't rely on your manufactures provided par data, with how many lights you guys probably sell Lowe, im surprised you don't pick up your own meter.
|07-26-2013 09:30 PM|
|07-26-2013 08:32 PM|
Originally Posted by AnotherHobby View Post
The different in the lights is the amount of led's used to achieve the rated par. The finnex uses A LOT of small led's across a board, which gives off a lot of light directly under the fixture, and diminishes very quickly. I took my own par readings of the finnex lights, and they're par claims about light at 15-18" were correct, but my graph was much different than advertised on how intense the light actually got, so the manufacterur claims i believe are skewed quite a bit. The current usa fixture, marineland, build my led, etc, all use fewer leds, but more powerful leds, more power means the par will not diminish as quickly, and par is much more progressive, similar to t5's dropoff.
|07-26-2013 02:36 PM|
Originally Posted by micheljq View Post
At 24", par on the Ray 2 is at 41% of what it is at 12" (36 @ 24" vs 87 @ 12")
As you see, the Ray 2 drops off in PAR faster than the Sat + does. However, the Ray 2 still has a lot more PAR at any level. For me, the Sat + would not be enough PAR for my plants. I'd need 2 of them, and that's a pretty big price difference.
|07-26-2013 01:49 PM|
|07-26-2013 01:47 PM|
Originally Posted by Jester946 View Post
|07-26-2013 05:34 AM|
I am tired of guessing where I am at for PAR.
|07-25-2013 08:23 PM|
|Ach1Ll3sH33L||Not a huge fan of the finnex lights, they seem washed out, and there par numbers are very high at the top of the water column, and diminish very quickly(this is due to using many small led's), where as a t5, lighting is much more progressive. If your going to do led, i think the best unit at a lower price point right now is the current usa satellite + series, its also less lighting and easier to manage the tank as such.|
|07-25-2013 01:17 AM|
Originally Posted by Bolsen27 View Post
I have a few stems of reineckii 'roseafolia' in the back of the tank that are very red, I thought they were red when they came in but the new leaves continue to get even more red the closer they get to the light!
You really won't find a better light for the price
|07-24-2013 07:59 PM|
Ray 2 only comes in two flavors now:
The planted tank one is the dual 7000K
|07-24-2013 07:51 PM|
Also, I wouldn't mind the Finnex ray 2...but which spectrum is which?! I found them on Amazon for a great price, but I have no clue which spectrum each one is.
Do I need a 48" light for my 55? Or would I get away with a 36" setup?
|07-24-2013 07:45 PM|
Originally Posted by SouthernCichlids View Post
|07-24-2013 06:50 PM|
I appreciate the comments. I am torn on a Finnex Ray 2, or a buildmyLED setup.
I feel the buildmyLED setup will be better because of the dimmer on it.
Anyone else's thoughts?
|07-24-2013 06:49 PM|
If you go with good stuff, you are generally rewarded, this applies to LEDs and T5's, I use ATI T5's on my home aquariums.
LED's for the reefs etc.
LED's have come a ways for FW tanks, but ......I still have not seen the same results with them as the T5's.
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