Royal Blue LED's?

Not to insult your intelligence Mr bill but I have never seen a 250 halide put down over 1200 par. I agree that some pigments mostly chlorophyll A use 630-660 nm range being said they receive only a small ammont of it 5 percent is doing me just fine

We do our PAR Measurements at 24". This is a more user friendly and less confusing as for SPS we want to see 200-500 PAR and most of our tanke are 18-30" Deep. A 400 watt Radium MH using a Reeflux Reflector puts out about 450 PAR @ 24". Some 250 watt MH loke the 10K XM come close to this. Just Remember that the intensity is the square of the distance.

The Radion Pro Spec of 1100 PAR does not specify a distance???

ET_Radion_spec_XR30wPro_zpsnbzvdoag.jpg


Its hard to say what distance they measured their PAR at, but given their components I would not be surprised if it was 12" Optics are the wild card and their chart does show a concentration or spotlighting in the middle.

A LED fixture we recently tested gave us over 500 PAR at 24" and over 2100 at 12"
 
I'm curious how all your charts pertain to my question. FYI-I'm not using Radions nor MH.

I consider the Royal Blue as the Primary Grow simply because it offers more PAR per watt than the top 420nm LEDs.

Back in the Day the 6.5K Iwaski was considered the best grow light. Its price has risen considerably due to the Indoor Hydroponics trend...It does grow both Tomatos and Corals very well.

Here is a standard Grow Spectrum Chart
stagrn_zpsa00dccf8.gif


Here is a spectrum chart from Sanjays research.

Iwasaki65.gif


Note: The Predominant spike in energy is the 420-480nm Grow range found in the numerous photosynthesis charts.

That said here is one of Sanjays Reef MH Charts

figure1-allm80.gif

I really have to pause when someone says you need this spectrum or this Green or Lime LED...

These MHs have been growing corals extremely well, even before the first PFO back when 80s Rock still rocked in the 90s and 2000.

I like to look at this research along with natural sunlight as the foundation of what a LED Fixture should do.

To be blunt...Spectrum matters....And for Corals consider the amount of Red blocked naturally and what they need and what makes them look better

PhotoPenetration_zpsbfcfc982.jpg


Hope this helps

Bill
 
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Exactly Nana. If your corals are happy and your happy what else matters? I love the windex look myself I really like to see the colors on my corals pop. Plus my Step-daughter gets annoyed when her friends she invited over ignore her and stare at my tank.
So I'm on the right track with running my lights 14% whites and 60% blues? I like the look and my coral colors are great. Growth has been awesome as the majority have doubled in size within the last 9 months :)
 
Thank you! My very first SPS. Was positive it was gonna die-lol. Now if I could keep Zoas as well.

I have the same issue

I can keep a Red Carpet, Numerous SPS but for some reason zoas for me do not grow like crazy...

At least I know its not the lights.

Bill
 
They all die, period. I've kept/keep clams, SPS/LPS, Shrooms, leathers just about everything thrives for me. Zoas hate me!! High nutrient or low, led or t5 doesn't matter. They'll do fine for a couple weeks, then just slowly start melting away. I no longer buy them.
Last Saturday I was given 2 frags. They were great up until day before yesterday. They're now struggling :(
 
Alot of different snails/starfish can develope s taste for zoas in my experience just watch them unless your not using good water or your alk/ph are swinging I don't see why you should have a problem with zoas expecially the low intensity your running
 
Well parameter are spot on and stable. No swings at all. Every coral and I mean EVERY coral is thriving except for my Zoas. 6yrs reefing and I've never been able to keep them long term.
But....I'm hoping this time will be different. Bigger tank, better lighting, much better flow and more fish poop-lol. It's now been 12 days and they're still alive :)
 
i have 465 nm and 445 nm leds..which ones should i use???

445 Without a doubt...

We Bin our Royal Blue to D36/37 for best color pop and growth...

The 465s will work but will provide a flat color with less fluorescence...

What Type of LEDs are they??? Big Difference between a Cree XR-E Royal Blue driven at 700 mA and their latest XT-E Royal Blue driven at 1200 mA... Its year 2018 and Generic 3 watt LEDs are not worthy of discussion as some T5 setups are more efficient.

Bill
 
I don't need fluorescence. I already get that from my 450 nm leds. I just wanted to get rid of my red, orange, and green leds from my SBReefLights to get more esthetic look. the 450 nm leds are great, BUT it's almost TOO blue... I wonder if I could get the esthetic look I want with the 465 nm Leds...?
 
Its all personal preference.

I like 3:1 or 4:1 Royal Blue to Blue to this some 410-430nm and maybe one or two 660nm photo red dialed down.

Bill
 

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