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GNC BluRay PRO in our DaniReef LAB: the italian 588 LED ceiling light


How to value these numbers in aquarium?

This is a good question. At first we thought that we could transport these values to the aquarium tout-court. Than we filled the aquarium, insert the probe and redone the measurements. We fazed but, as we have already said in elsewhere, we’re going to talk about this in another article. Basically, while at 20 cm the result is practically the same, as we progressed, thanks to the glass and the water itself reflecting the light, we found even the double of the values measured in air. Obviously this isn’t a detail that can be standardized, so we think that our method of calculation is the most correct, and the best for the comparison of coverages of different ceiling lights.

Here is an example: these are the PAR values at about 40 cm.

La misurazione dei PAR a 37 cm di distanza per la plafoniera a LED GNC BluRay PRO

As you see, we should have 470 PAR. And yet, and you can also see it here below, at that distance from the ceiling light, we’re over 600 PAR. And on the bottom on the sides instead oof 116 we are more over 400.

If you click on the video you’ll be directly redirected to the part in which we measure th PAR with the Quantum Meter MQ-510 by Apogee submerged in water. I think it’ll be very instructive.

The comparison with other ceiling lights on the market

Here the data collected in the DaniReef Lab with the Quantum Meter MQ-510 by Apogee. We can do an interesting comparison between the ceiling lights:

LampEnergyCostPower consumptionEnergy/€Energy/w
AI Hydra 32 HD at 17 cm560.00043090,501.3036.190
AI Hydra 32 HD at 37 cm563.00043090,501.3106.224
AI Hydra 32 HD at 57 cm463.00043090,501.0765.112
Aqamai LRM at 17 cm643.00046590,881.3827.071
Aqamai LRM at 37 cm722.00046590,881.5527.941
Aqamai LRM at 57 cm616.00046590,881.3266.783
Aqamai LRS at 17 cm276.00028947,599555.797
Aqamai LRS at 37 cm312.00028947,591.0786.547
Aqamai LRS at 57 cm254.00028947,598805.343
ATI Straton at 17 cm2.018.0008902112.2689.565
ATI Straton at 37 cm1.410.0008902111.5846.681
ATI Straton at 57 cm957.0008902111.0764.537
Cetus 2 at 17 cm410.00021560,681.9066.756
Cetus 2 at 37 cm291.00021560,681.3534.793
Cetus 2 at 57 cm174.00021560,688072.861
Ecotech Marine Radion G5 XR30 Blue at 17 cm1.536.0009492031.6187.564
Ecotech Marine Radion G5 XR30 Blue at 37 cm1.098.0009492031.1575.409
Ecotech Marine Radion G5 XR30 Blue at 57 cm648.0009492036833.192
GNC BluRay PRO at 17 cm1.321.0001.1491401.1509.437
GNC BluRay PRO at 37 cm874.0001.1491407606.239
GNC BluRay PRO at 57 cm564.0001.1491404914.029
Orphek iCon at 17 cm1.469.0001.3502291.1776.417
Orphek iCon at 37 cm1.286.0001.3502291.0305.616
Orphek iCon at 57 cm1.156.0001.3502299255.047
Philips CoralCare at 17 cm1.859.000749190,52.4819.756
Philips CoralCare at 37 cm1.341.000749190,51.7907.037
Philips CoralCare at 57 cm933.000749190,51.2464.899
Philips CoralCare Gen2 at 17 cm1.330.000749168,51.7807.914
Philips CoralCare Gen2 at 37 cm920.000749168,51.2295.461
Philips CoralCare Gen2 at 57 cm631.000749168,58433.745
Reef Flare PRO L Blue at 17 cm1.646.0009401661.7529.904
Reef Flare PRO L Blue at 37 cm1.338.0009401661.4238.047
Reef Flare PRO L Blue at 57 cm922.0009401669815.545
GNC BluRay PRO sopra il meraviglioso acquario di Luper
GNC BluRay PRO above Luper’s wonderful aquarium

For what regards the energy produced per euro of purchase the ceiling light is in the low average, but next to some of the best lamps like Orphek iCon and Ecotech Marine Radion XR30 G5. After all, the quality has a price. On the other hand, regarding the developed PAR per watt it reaches a very high value. Only three ceiling lights have ever overcome the value of 9.437 PAR per Watt at 17 cm, and not by far, and one is not even for sale anymore. It has a very high efficiency, very close to Philips CoralCare and ATI Straton. It’s also high the energy produced at every distance, that’s the sign of a great coverage with very high average PAR values. All this data shows that these ciling lights are perfect for aquariums of 60 cm of width, a bit stretched for 70 cm ones. Even if you have to consider that the corals wouldn’t be placed next to the glass.

GNC BluRay PRO sopra il meraviglioso acquario di Luper
GNC BluRay PRO above Luper’s wonderful aquarium

Maintenance costs

The GNC BluRay PRO cost 1.150 euro, even if they’re often on sale, so make sure to follow DaniReef so that we will alert you when there are some offers.

The absorbed power is 139,66 watt, so that the cost/watt ratio is about 8,21 euro per watt. For a comparison with the other ceiling lights you can consult the following chart. Notice that they’re sorted by decreasing efficiency, so the best ones are on top.

Ceiling lightPricePower consumptionEuro per watt ratioReferences
Orphek OR2 Blue Plus180 USD54.7 w3,3 euro per wattDaniReef LAB
Orphek OR2 Reef Day Plus180 USD54,7 w3,3 euro per wattDaniReef LAB
Cetus 2215 €60,7 w3,5 euro per wattDaniReef LAB
Philips Coralcare 2019749 €190 w3,9 euro per wattDaniReef LAB
Maxspect Ethereal500 €126 w4,0 euro per wattItalian test
ATI Straton890 €211 w4,22 euro per wattDaniReef LAB
Philips CoralCare GEN2 2020749 €168,5 w4,44 euro per wattDaniReef LAB
Ecotech Marine Radion XR30 G5 Blue949 €203 w4,67 euro per wattDaniReef LAB
Radion XR30w G2 PRO790 €170 w4,7 euro per wattReview
AI Hydra 32 HD430 €90,5 w4,75 euro per wattDaniReef LAB
Radion XR30w G4 PRO915 €190 w4,84 euro per wattItalian article
OceanLed Sunrise 600870 €180 w4,8 euro per wattItalian test
Orphek Atlantik V41099 €226 w4,9 euro per wattTest
Radion XR30w G2690 €140 w4,9 euro per wattItalian review
Radion XR30w G4760 €150 w5,1 euro per wattItalian article
Aqamai LRM465 €87,5 w5,1 euro per wattDaniReef LAB
Zetlight UFO ZE-8000500 €91,5 w5,5 euro per wattTest
Reef Flare Pro L Blue940 €166,25 w5,65 euro per wattDaniReef LAB
Orphek iCon1.350 €229 w5,89 euro per wattDaniReef LAB
Aqamai LRS289 €47,6 w6,1 euro per wattDaniReef LAB
GNC BluRay PRO1.149 €140 w8,21 euro per wattDaniReef LAB
CEAB Slide & Led2.700 €275 w9,8 euro per wattReview
Sicce GNC 4661.592 €120 w13,3 euro per wattReview

The ceiling light is very well built, heavy and solid. Very similar to the previous GNC AM 466 that we tested almost 10 years ago now. The price is high but the the performances are great, and most of all it has record-breaking uniformity of coverage.

The economic efficiency so it’s lower than the average, but the technical efficiency, that is the developped PAR per each watt, is very high.

What can we breed?

This is the spectral distribution (PFFD), that is the PAR value, measured at different dephts, in clear oceanic waters. These are the values:

1 m5 m10 m15 m20 m
PFFD (µmoli/M2/s)1640958618436316
Ecotech Marine Radion XR30 G5 Blue finalmente nel DaniReef LAB

So at 37 cm of distance with a GNC BluRay PRO we have 470 µmoli/M2/s, an approximate value of 14 meters below sea level. A power in the average, but that could reach even 10 meters if we consider the reflection on the glass, as you saw in the previous video.

The values are great for aquariums up to 60/65 cm of lenght, both for SPS and anything else. Obviously, some demanding SPS may need more PAR. Consider that with this ceiling light you could have the PAR values you’d have at 10 meters beyond sea level. Such power could breed everything, but you could find some limits for the coloration of the most demanding corals, but as you can see from Luper’s wonderful aquarium you can achieve incredible results. Incresing the depth the power decreases, even if not too much, to reach a wider coverage. The ceiling light is 40 cm of length, so it’s perfect for aquariums up to 60 cm and multiples. 2 for 120 cm are perfect, but they’re pretty good even on for 140 cm.

Questions and comments, as always, are very welcomed!

GNC BluRay PRO sopra il meraviglioso acquario di Luper
GNC BluRay PRO above Luper’s wonderful aquarium

We really want to reserve a special thanks to our friend Luca Perini, Luper, for allowing us to play with his ceiling lights!

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Laureata magistrale in Filosofia Teorica all'Università di Torino, ha completato il primo ciclo di studi a Macerata. Appassionata di scrittura e lingue straniere, su DaniReef collabora alla traduzione in inglese degli articoli. She earned a master's degree in Theoretical Philosophy at the University of Turin, but her studies started at the University of Macerata . She's passionate about writing and foreign languages, collaborates on DaniReef with the English translation of the articles.