Lux Meter App?

[NanaReefer]

I've no idea what I'm doing-lol. Anyone wanna explain these readings to me? Please!
Readings taken 1" from waters surface, 9-10" directly under each Radion Puk.

Right Puk

Left Puk

 

[twilliard]

Looks like an app for camera shoots
Are you android?

 

[NanaReefer]

No, Apple.

 

[twilliard]

No, Apple.

Oh darn it!
I downloaded a cool app (used by college students) that is spectacular
Called physics toolbox

 

[NanaReefer]

Guess I better break out the Seneye Reef, ugh. I've no laptop/PC and the iPad app sucks.

 

[saltyfilmfolks]

Galactica for iPhone. Best of seven tested for iPhone. I tested 14 total iPhone and android
You looking for a lux only app if possible.
And honestly the $15 lux meter from Amazon will save a lot of headaches.

For reference my DT t5 are at 23000 lux and my 30 cube is approx 30,000.
Both measured at the top of the water.

 

[NanaReefer]

Ok here's what I'm getting using the Galatica app on my iPad.
Left Puk 1" from waters surface.

Right Puk.

 

[NanaReefer]

According to what little knowledge I have, these numbers are not good. However my Radion is in acclimation mode and my max intensity is at 44%.

Just tried it with iPhone. Getting 3.9k under puks.

 

[Hawain_Rob]

What would be a good number?

 

[NanaReefer]

At least 20k at the waters surface.

 

[dbrewsky]

I know im going to catch some heat because of this but the majority of the apps will not be accurate at all. Besides LUX is not a good way to determine light intensity on a reef tank because Lux is a standard that measures perceived brightness in human eyes and will not accurately measure the heavy weighted blue and near uv range spectrum that corals actually use.

This does not make it an accurate measurement for reef tanks. You can take two identical tanks, one with a radion measuring 400 lux and have corals thriving and one with a sodium vapor or hot light studio light that lux is actually designed to measure at 10,000 lux and the corals would be dead in a week.

If you already have a Seneye that does accurately measure spectral data and PAR I would see if you can borrow a laptop or other device and use real, quantitative data that accurately measures the light quality that corals need.

 

[Sabellafella]

Galactica for iPhone. Best of seven tested for iPhone. I tested 14 total iPhone and android
You looking for a lux only app if possible.
And honestly the $15 lux meter from Amazon will save a lot of headaches.

For reference my DT t5 are at 23000 lux and my 30 cube is approx 30,000.
Both measured at the top of the water.

Sorry to hijack the thread but yall getting me interested. Whats the best lux app for Android

 

[NanaReefer]

I know im going to catch some heat because of this but the majority of the apps will not be accurate at all. Besides LUX is not a good way to determine light intensity on a reef tank because Lux is a standard that measures perceived brightness in human eyes and will not accurately measure the heavy weighted blue and near uv range spectrum that corals actually use.

This does not make it an accurate measurement for reef tanks. You can take two identical tanks, one with a radion measuring 400 lux and have corals thriving and one with a sodium vapor or hot light studio light that lux is actually designed to measure at 10,000 lux and the corals would be dead in a week.

If you already have a Seneye that does accurately measure spectral data and PAR I would see if you can borrow a laptop or other device and use real, quantitative data that accurately measures the light quality that corals need.

Orphek seems to disagree with you greatly. [emoji6]

 

[Sabellafella]

I know im going to catch some heat because of this but the majority of the apps will not be accurate at all. Besides LUX is not a good way to determine light intensity on a reef tank because Lux is a standard that measures perceived brightness in human eyes and will not accurately measure the heavy weighted blue and near uv range spectrum that corals actually use.

This does not make it an accurate measurement for reef tanks. You can take two identical tanks, one with a radion measuring 400 lux and have corals thriving and one with a sodium vapor or hot light studio light that lux is actually designed to measure at 10,000 lux and the corals would be dead in a week.

If you already have a Seneye that does accurately measure spectral data and PAR I would see if you can borrow a laptop or other device and use real, quantitative data that accurately measures the light quality that corals need.

I dont disagree at all, depending on the type of lighting- you can be way way off with measuring lux as your primary measurement. The device could be 100% accurate,Par is too valuable to me but its too darn expensive for fellow reefers to even consider purchasing. You can litterally bleach any coral moving it 2 inches down your frag rack not realizing its only a 20+ par difference. From "what ive seen" with lux you can barely tell the difference. Im not bashing lux measurement as its better then nothing especially using leds

 

[dbrewsky]

the article you are referring to also states that lux is light intensity most pecievable as "bright" to the human eye which is the green spectrum and does not benefit coral. The spectral graphs of light that corals actually use contains very little to no green spectrum. Using a method that measures green light to approximate the intensity of appropriate reef lighting intensity does not make sense and your actual PAR readings could be greatly higher than the lux would refer to especially in LEDS where the green could be dialed down significantly in comparison to the rest of the spectrum.

https://orphek.com/about/kelvin-lux-lumens-par-pur/

 

[twilliard]

Orphek seems to disagree with you greatly. [emoji6]

LOL I love this one !

 

[mcarroll]

Ok here's what I'm getting using the Galatica app on my iPad.
Left Puk 1" from waters surface.

Right Puk.

I would try turning up the fixture to 100% on all channels for testing and measure that way. Return to normal settings when you're done.

 

[Darryl]

spend more time enjoying your hobby and less time putzing with stuff.
if you need to get one because because listen to mcarroll its cheep and easy and then after you play with for a bit get back to enjoying .
AND DONT GO SCREWING WITH YOUR LIGHTS IF EVERYTHING IS AND HAS BEEN GOOD, BECAUSE A STUPID METER TELLS YOU TOO!
of corse if it hasn't been good then check your water first then habits

 

[NanaReefer]

Well I dug out my Seneye and got a LUX reading of 14,995 at waters surface. My Radion is at 43% max for this reading.
Par at about 6" below surface was 356.
Where my T. Maxima on SB Par is 115. This concerns me.

I'm not messing with my lights. I'm educating myself! I'm curious too.
Anyone who does testing on lights use Par, Lux, Lumen, Kelvin and PUR to explain. I want to know what they all mean and how they apply to my corals.

 

[NanaReefer]

LOL I love this one !

Are you laughing at me? [emoji848]