AI Prime spectrum dimming AB+

[Chac317]

Hey all

I have 4 AI Primes retrofitted into a t5 fixture and I’m still working on dialing them in. I am running AB+ on them, but I am wanting to drop the intensity while keeping the same spectrum. On the app, I used two fingers to lower the intensities are the same ratio but when doing the math they don’t add up.

For example, when I dragged down on the app I took UV from 119% to 82%, which is roughly 69% of full power for AB+. I would assume if I multiplied the other colors by 0.69% they would all add up. However, this is not the case.
Anybody know why? Would I be better off just multiplying each one’s max by whatever percentage I want to run them at instead of dragging them all down together?

The biggest difference is in royal and blue. At full AB+ they are ran at 79% and 80%. When drag and dropped in sync with others, they go down to 32% and 33%. When I do the math in this scenario, 69% of 79 and 80 is 54 and 55. So almost 20% intensity difference.

Am I overthinking this? Does this even make sense to anyone lol. I just want to keep the same spectrum and equally lower the power of the units.

 

[oreo54]

Isn't there a "global" dim slider which will drop all channels?

 

[Chac317]

There is if you hold two fingers down and drag them. However, if you do the math the percentages don’t add up. It’s very strange. It’s like it’s bringing them down in the same ratio but it actually isn’t.

 

[Angrywalnut]

I noticed this as well. I think its trying to maintain the spectrum for you. If you use the individual led slider and look at wattage claimed being used they are not the same. NOTE* Hydra26hd.
Blue / RB
Percent - power watts
5 1 5-1
10-2 10-2
20-4 20-5
30-6 30-7
40-8 40-9
50-10 50-12
60-12 60-14
70-14 70-17
80-16 80-19
90- 18 90-22
100-20 100-24
Red/green same. Violet and UV roughly same wattage used. I think the Blue is stronger than the RB
so they drive them differently. Sorry its ugly, it didn't keep spacing when posted.

 

[The nano reefer]

I just got a prime 16hd and noticed the same issue ive been manually adjusting each slider

 

[Chac317]

I noticed this as well. I think its trying to maintain the spectrum for you. If you use the individual led slider and look at wattage claimed being used they are not the same. NOTE* Hydra26hd.
Blue / RB
Percent - power watts
5 1 5-1
10-2 10-2
20-4 20-5
30-6 30-7
40-8 40-9
50-10 50-12
60-12 60-14
70-14 70-17
80-16 80-19
90- 18 90-22
100-20 100-24
Red/green same. Violet and UV roughly same wattage used. I think the Blue is stronger than the RB
so they drive them differently. Sorry its ugly, it didn't keep spacing when posted.

So do you think the spectrum is closer to the original when manually adjusting the sliders or when dragging them all down together? It’s almost a 20% difference in the blue channels.

 

[The nano reefer]

So do you think the spectrum is closer to the original when manually adjusting the sliders or when dragging them all down together? It’s almost a 20% difference in the blue channels.

Good question i wonder if anyones ever tested that before?

 

[highest_tides]

Why does everyone seem to run so high on UV and Violet? My LPS told me to turn both down to 10%..

 

[Chac317]

That’s what the AB+ program calls for. I defer to people smarter than me who created the program

 

[Angrywalnut]

So do you think the spectrum is closer to the original when manually adjusting the sliders or when dragging them all down together? It’s almost a 20% difference in the blue channels.

When dragging them all, I believe its keeping the same spectrum just dimmer. The built in graph doesn't indicate change in spectrum, same just not as intense. When you move individual slider you can see graph swell. It does not do that when pinching. It also goes back to your original settings when spreading.

 

[Angrywalnut]

Why does everyone seem to run so high on UV and Violet? My LPS told me to turn both down to 10%..

Its as close to an Actinic bulb as a reasonably priced LED can go. Some people wouldn't even use LED till these showed up. UV LED is 400-405nm (right on upper edge of what UV is) and Violet is 415-420nm or so. Look at an ATI T5 Actinic. The spectral graphs indicate spikes at 400 and 420-425 right where these LED sit.
It will increase fluorescence and possibly growth once coral are adapted to them.

 

[The nano reefer]

When dragging them all, I believe its keeping the same spectrum just dimmer. The built in graph doesn't indicate change in spectrum, same just not as intense. When you move individual slider you can see graph swell. It does not do that when pinching. It also goes back to your original settings when spreading.

I believe you are correct i just tried it. It rounds the numbers different to keep the same spectrum for example my white went from 19 to 9 but royal blue went from 79 to 40 at 50% decrease. It rounded the white down but the blue up to get the smallest spectrum change