TECH SECTION

LED bars Orphek OR2 Blue Plus tested in our DaniReef LAB


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.

Le barre a LED Orphek OR2 Blue Plus testate a fondo nel DaniReef LAB

Power Consumption

The measurement of the consumption was made possible thanks to the useful device RCE PM600 that can also measure the Cos(fi) (or power factor). The result is already given in watt.

Le barre a LED Orphek OR2 Blue Plus testate a fondo nel DaniReef LAB

Here above there’s the maximum power and below the Cos(fi).

Le barre a LED Orphek OR2 Blue Plus testate a fondo nel DaniReef LAB

The calculus of the absorbed current, that is the power, is the following one:

Orphek OR2 Blue Plus ceiling light: 54,69 watt. Considering that this ceiling lights at 17 cm has 459 μmol m-2 s-1 in the middle, we can say, in perspective, that it will have a peak value of 8,39 μmol m-2 s-1 w-1 (PAR per watt). This value is hardly comparable with other ceiling lights because it remains constant throughout the length.

The comparison with other ceiling lights on the market

Recently we started to use the new Apogee’s Quantum Meter MQ-510. For this we can’t completely compare the data of other ceiling lights because before we used the probe Seneye.

But considering the first celing lights we managed to test we can do an interesting comparison about their produced energy:

EnergyCostConsumptionEnergy/€Energy/w
AI Hydra 32 HD at 17 cm (still in italian)560.00043090,501.3036.190
AI Hydra 32 HD at 37 cm (still in italian)563.00043090,50 1.3106.224
AI Hydra 32 HD at 57 cm (still in italian)463.00043090,50 1.0765.112
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
Cetus 2 at 17 cm410.00021560,681.9066.756
Cetus 2 at 37 cm 291.00021560,681.3534.793
Cetus 2 at 57 cm 174.00021560,688072.861
Orphek OR2 Blue Plus 120 cm at 17 cm323.00018054,691.7945.906
Orphek OR2 Blue Plus 120 cm at 37 cm291.000180 54,69 1.6165.321
Orphek OR2 Blue Plus 120 cm at 57 cm259.000180 54,69 1.4384.736
Orphek OR2 Reef Day Plus 120 cm at 17 cm255.00018054,691.4184.667
Orphek OR2 Reef Day Plus 120 cm at 37 cm 233.00018054.691.2924.252
Orphek OR2 Reef Day Plus 120 cm at 57 cm 225.00018054.691.2514.117
Philips CoralCare at 17 cm1.859.000749190,502.4819.756
Philips CoralCare at 37 cm 1.341.000749190,50 1.7907.037
Philips CoralCare at 57 cm 933.000749190,50 1.2464.899
Le barre a LED Orphek OR2 Blue Plus testate a fondo nel DaniReef LAB

The produced energy per watt is costant throughout the different distances in the Orphek OR2. This linear behavior is typical of LED bars. Now we have to test other bars and do proper comparisons. Don’t be deceived by the PAR higher of other ceiling lights, because it has a prevalence of blue and it behaves differrently, so it can’t be comparable tout-court.

Mantaining costs

The LED bars Orphek OR2 Blue Plus cost 180 dollars, and we have to add the taxes because there isn’t a national distributor. But considering also the change in euro, we still could buy it at 180 euro. Deliver included.

The absorbed power is 54,69 watt, so it has a relationship cost/watt of 3,3 euro per watt. In order to do a comparison with the other ceiling lights you can refer to this chart:

Ceiling lightPriceConsuptionRelationship euro per wattReferences
Orphek OR2 Blue Plus 180 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
Radion XR30w G2 PRO
790 €170 w4,7 euro per wattItalian review
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 LRM
465 €87,5 w5,1 euro per wattDaniReef LAB
Zetlight UFO ZE-8000500 €91,5 w5,5 euro per wattTest
Aqamai LRS289 €47,6 w6,1 euro per wattDaniReef LAB
CEAB Slide & Led2.700 €275 w9,8 euro per wattReview
Sicce GNC 4661.592 €120 w13,3 euro per wattItalian review
Le barre a LED Orphek OR2 Blue Plus testate a fondo nel DaniReef LAB

As we have said for the OR2 Reef Day Plus, the ceiling light is very well built, solid and well assembled. I really like the extruded borders as well as the refinement. There isn’t a programming that assures a simple modality of use, you can also assit it with other bars in other to obtain the power you need. In this contest we have to focus on the measured PAR, given that that’s not possible to do a proper comparison with other ceiling lights. But if you consider the whole energy you have a more realistic picture. So the bars are perfect for breeding corals, but you have to take the bars you need. Do you need twice the PAR? Use two bars. Do you need four times the PAR? Use four, and so on. The cost per watt is incredibly low, the lowest among the one we tested, while before comment the value of PAR per watt we have to test other blue bars. What else to ask to a LED bar?

Le barre a LED Orphek OR2 Blue Plus testate a fondo nel DaniReef LAB

Questions and comments, as always, are welcomed.