Lux to par conversion factor?

[scoobywho]

Been doing some research on lux to par conversion... I was thinking of buying a lux meter to work out light distances, but does the fact I'm running two different brands of light (ish 150 & Mars ts1000) change the equation... I know the conversion won't give exact ppfd values but was hoping for a cheap ball park with Lux compared to a fortune on buying a par meter?

Seen a ppfd conversion app but not sure if its legit... hoping a more knowledgeable member on LED knows the score.

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[GEORGE]

Been doing some research on lux to par conversion... I was thinking of buying a lux meter to work out light distances, but does the fact I'm running two different brands of light (ish 150 & Mars ts1000) change the equation... I know the conversion won't give exact ppfd values but was hoping for a cheap ball park with Lux compared to a fortune on buying a par meter?

Seen a ppfd conversion app but not sure if its legit... hoping a more knowledgeable member on LED knows the score.

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I don't think you need to buy A lux meter. I believe there is An app on your phone you can get the lux reading's from. But if you want to put out money for A meter, why don't you just buy A PAR meter? JMO

[scoobywho]

Aye I've seen a few decent looking apps hotshot and if they are legit would be happy to use them no problem I'm just not sure how decent they actually are. The difference is a lux meter is £30 but a par meter is about £300. Was more curious if the conversion factor was accurate enough to work with.

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[ttreetrunk]

I use a Sealy lux meter. About £25 it's accurate.
I would be dubious of apps.
Loads on the tinter web about intensity.
Most I've read say 70000 lux max in flower.
I've found that the more Sativa strains like a bit more.
I'm running some at the moment at 90000 lux and they love it.
Using a meter will help with light placement as well.


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[gardro]

Use the lux meter/ app for relative measurements and that will help you enough. No point trying to get definitive numbers from them

Decent manufacturers will tell you the ratios but it is different for all flavours and types of led.

Cheap par meters use a lux sensor and then convert internally so unless you plan to spend $1000 just get a lux meter.

[WhIpLaSh]

For approximates, the Irish chap from Migro recommended this app. Gives you a rough idea of Lux and then you can convert to PAR/ppfd from there (roughly)

[scoobywho]

Use the lux meter/ app for relative measurements and that will help you enough. No point trying to get definitive numbers from them

Decent manufacturers will tell you the ratios but it is different for all flavours and types of led.

Cheap par meters use a lux sensor and then convert internally so unless you plan to spend $1000 just get a lux meter.

Cheers Gardro, I'm not looking for any exact measurements just so I know I'm in the ballpark area, guessing with light heights has came round and bit me on the arse before whether to close or too far, so I'd be happy enough with a rough idea of where I'm at . What do you reckon about lux meters on phones... any good? I've seen folk using homemade light diffusing caps out of paper and a tube, do you reckon that works or a load of bollocks?

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[scoobywho]

For approximates, the Irish chap from Migro recommended this app. Gives you a rough idea of Lux and then you can convert to PAR/ppfd from there (roughly)

I've got it mate but now I'm reading folk saying it needs calibrated first night I don't have a clue how to calibrate lol

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[GEORGE]

I forget what I paid for this, but sure it wasn't too much. I've google it and get back to you on the price.




$35.36 bucks.

[WhIpLaSh]

I've got it mate but now I'm reading folk saying it needs calibrated first night I don't have a clue how to calibrate lol

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LOL that makes two of us!