Why the disparity in LED ratios between big brands?!

[oreo54]

I completely forgot about needing/requiring glass to protect your eyes from the UV put off by MH. I sure do miss my MHs.

Just add some of these .

Ultra Violet 365nm - UVA 3W LED-8794102402

www.stevesleds.com

Lens Beam Angle - 120° beam angle with more than 95% off all light emitted in a beam of 90° - We have these specially made because if you use an external optic with the violet LEDs, we have found that the LED has a significantly reduced lifespan and is susceptible to lens burn. With the 60° beam angle, it requires not external optic, and easily punches through to the bottom of even the deepest enclosures and cages! [ /quote]

Less chance of spill.

 

[design.maddie]

Just add some of these .

Ultra Violet 365nm - UVA 3W LED-8794102402

www.stevesleds.com

I'm not looking to add anything to my lights. I am perfectly happy.

 

[Jeeperz]

I completely forgot about needing/requiring glass to protect your eyes from the UV put off by MH. I sure do miss my MHs.

If you add glass to block the UV from your eyes, aren't you also blocking it from the corals and making it pointless to have the UV in the first place?

 

[design.maddie]

If you add glass to block the UV from your eyes, aren't you also blocking it from the corals and making it pointless to have the UV in the first place?

The bulbs back then weren't made to be used without the glass and yes. That was the point we were both trying to make. Even when the bulbs were putting out meaningful amounts of UV we ended up needing to shield ourselves from it so what point is it putting them in our LEDs?

 

[Bpb]

Honestly I wonder if a small amount of IR is more beneficial than the UV side of things. Data seems to be inconclusive whether corals have the Emerson effect that terrestrial plants do

 

[HudsonReefer2.0]

I ran 2x150 w ab 10k hqi lamps in my sunpod for 9 hr photoperiod and sps loved it. White tank This was almost 20 years ago.

 

[design.maddie]

I ran 2x150 w ab 10k hqi lamps in my sunpod for 9 hr photoperiod and sps loved it. White tank This was almost 20 years ago.

I loved my HQI I had a single 250 with VHOs on a 70 and tank was so happy.

 

[Brymac1]

Honestly I wonder if a small amount of IR is more beneficial than the UV side of things. Data seems to be inconclusive whether corals have the Emerson effect that terrestrial plants do

Dana Riddle has said there is little doubt that the Emerson effect is present in corals.

 

[Brymac1]

The bulbs back then weren't made to be used without the glass and yes. That was the point we were both trying to make. Even when the bulbs were putting out meaningful amounts of UV we ended up needing to shield ourselves from it so what point is it putting them in our LEDs?

While the glass blocks all UVC and UVB, quite a bit of UVA still passes through the glass and into the tank.

 

[J1a]

Imho it’s a crapshoot. Manufacturers use the spectrum that is “trendy” among hobbyists. For instance, the overabundance of violet and “uv” nowadays is a direct result of consumers thinking that this spectrum is good for growing corals. There is no definitive proof of this, but nobody will buy lights without “uv”. It’s all marketing.

Most lights are marketed with UV channel without much meaningful UV anyways.

Some calls 405 diodes UV because the spread of emission cross the 400nm mark,
Some uses 390-400nm diodes but the numbers of diodes are very low.

Imo, not much meaningful UV from most of the lightsets.

 

[Kfactor]

i dont think it really matters pick what led you like . am running 2 reefbrite mh hybrids with a kessil a360x in the middle for ramp and love it .

 

[MaxTremors]

The bulbs back then weren't made to be used without the glass and yes. That was the point we were both trying to make. Even when the bulbs were putting out meaningful amounts of UV we ended up needing to shield ourselves from it so what point is it putting them in our LEDs?

Well, the vast majority of LED fixtures aren’t putting out true UV light, it’s near-UV. Anecdotally, I’ve noticed a marked difference in the coloration of my corals going from LEDs with nothing or not much sub-450nm to LEDs with a good peak in the 400-430nm range. What might produce the best coloration is not necessarily the same as what is the best spectrum for photosynthesis/growth.