Par Readings

[EricTMah]

First round done.

Meter:
Apogee MQ -200

Lighting:
2X Maxspect Razor 10K 120w
3' Vertex illumilux blue
4' Vertex illumilux blue

Intensity:
Maxspects 55% white 100% blue
Both illumilux at 100%

Sony Xperia Z3

 

[reef keeper]

Nice work. Really drops off outside the light!?

 

[EricTMah]

Nice work. Really drops off outside the light!?

Ya. The only disadvantage of led. I could fix it by raising my lights. But apparently my corals are alright with it though

Sony Xperia Z3

 

[Skim]

LOOK'S GREAT! I like the fact that you were not scared to take it right to the surface.
What are the Dimensions of that tank?

 

[nathan]

Damn that's a crazy awesome tank

 

[BigReefer]

there needs to be a rental of par meters lol

 

[EricTMah]

LOOK'S GREAT! I like the fact that you were not scared to take it right to the surface.
What are the Dimensions of that tank?

120 tall. 48X24X24

Sony Xperia Z3

 

[Nighthawk26]

Round Two:

Thanks @EricTMah for stopping by today to get these reading.

Tank: 72" Long, 30" Deep, 24" tall

Lights: 4 x Radion Gen2.
9" off water

*Note: Front to back orientation. 120 TIR WIDE lens

Peak Intensity 70%
Blues 100%, White 50%, Green/Red, 30%

** The 120 reading is basically in a shadowed overhang. As is the 105 much lower. The 110 in the sand bed on the left is right at the front glass, the 140 is right under the light on sand bed.

I took the pic so you can see where lights are. Sorry it's not super clear. The App on the phone to put the numbers in lost some quality.

For those of you with Radins of different Generation, or lens angle, here is a link that is a pretty accurate tool.

http://www.aquaticlog.com/radion

You could put in my parameters when set to GEN2 with TIR wide lens, then leave the parameters, but change the GEN and lens, and do the math. For the most part, in the few examples Eric and I checked, they were pretty spot on when converting.
Sent from my SM-G920W8 using Tapatalk

 

[Marz]

How high are your lights from the water?

 

[Nighthawk26]

How high are your lights from the water?

Bah, 5 edits and it was in and out twice. 9".


Sent from my SM-G920W8 using Tapatalk

 

[BigReefer]

sooo cool sooo jealous

 

[Nonuser]

It's hard to tell by the picture. But does the radions have a some what consistent value based on depth? Because in the picture some values appear to be different at the same depth. Led's shouldn't change strength from one fixture to the other.

Also what depth do you find is the best placement for which type or corals

Also at 24" basically 110? or 150, 175

 

[EricTMah]

It's hard to tell by the picture. But does the radions have a some what consistent value based on depth? Because in the picture some values appear to be different at the same depth. Led's shouldn't change strength from one fixture to the other.

Also what depth do you find is the best placement for which type or corals

Also at 24" basically 110? or 150, 175

They were consistent. We measured par on rock work, linear across the tank. So orientation of the readings taken were different from front to back. The way the radions being mounted front to back caused different readings at the same depth.

Sony Xperia Z3

 

[Nighthawk26]

It's hard to tell by the picture. But does the radions have a some what consistent value based on depth? Because in the picture some values appear to be different at the same depth. Led's shouldn't change strength from one fixture to the other.

Also what depth do you find is the best placement for which type or corals

Also at 24" basically 110? or 150, 175

I noted that some of the discrepancy, especially at the sand bed is because of front to back proximity. IE. the 110 is right at the front glass, while the 170 is DIRECTLY under the light mid tank.

I suspect you see some of the numbers same at different depths based on where they are in relation to the puck itself. As you go off from center o fthe puck the drop off will increase. It would be far more severe with the standard lenses.

 

[Nonuser]

Ah I see

 

[Nonuser]

http://www.bulkreefsupply.com/52-weeks/week-46.html

 

[Alberych]

Hey can round 3 be my tank.

 

[Nick James]

Do PAR meters accurately measure LEDs tho? I was lead to believe that the readings were lower than the actual par of LEDs for some reason.

 

[AdInfinitum]

Apogee, gives correction factors to apply for various wavelengths of led. It's easy and a relatively small adjustment for the most part (largest listed is 10.7% for full 448nm blues)

Their newest model sensor reads LED without correction factors but it's not enough of a difference for me to justify upgrading...