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Plankt0s
08/28/2009, 12:24 AM
Does anyone know if these will work for our purposes?

http://cgi.ebay.com/DIGITAL-LIGHT-LEVEL-METER-200-000-LUX-PHOTO-CAMERA_W0QQitemZ250486801318QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3a522d43a6&_trksid=p3286.c0.m14

http://cgi.ebay.com/Digital-Photo-Light-Lux-Meter-100-000-4-LCD-Camera_W0QQitemZ270378473880QQcmdZViewItemQQptZDigital_Cameras?hash=item3ef3d01998&_trksid=p3286.c0.m14#ht_2422wt_939

http://cgi.ebay.com/Digital-Light-Meter-100k-Lux-Tester-LCD-Camera-Photo-A4_W0QQitemZ330353865799QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item4cea9ff447&_trksid=p3286.c0.m14#ht_3667wt_939

I have asked the sellers on a few of these Lux meters if they will work for a saltwater aquarium and I keep getting answers like... "You could take the water out of your aquarium and test" or "I dont know" or "This is for cameras". My experience with things like this is that it probably will work but I dont know if the sensor part needs to be sealed or if it is just the wrong thing. I am really just trying to get away with not spending $100 on one of these: http://www.automatedaquariums.com/mw_m700.jpg

vidson
08/28/2009, 12:48 AM
they all seem to be decent. Tagging along.

Plankt0s
08/28/2009, 12:54 AM
I just dont know if putting them in water will ruin them.

Dead_Head_Reefr
08/28/2009, 01:38 AM
The one in the picture you have the milwaukee. It's sensor is waterproof that's the same on they sell on fosters and smith. they want 84.99 plus shipping for it there. HTH.

03LightningSVT
08/28/2009, 04:43 AM
Just search the product manufactures website for specifications and intended use.

Plankt0s
08/28/2009, 09:20 PM
Most of these things dont really have pages like that... You will be lucky if the instructions are even in english.


If not these does anyone know of an inexpensive lux meter that does work for use in aquaria?

Plankt0s
09/17/2009, 10:31 AM
Does anyone know of a lux meter that works in aquariums for under $100 other than the Milwaukee ?

JAustin
09/17/2009, 12:34 PM
ooooh, wating to know also!

Hawkdl2
09/17/2009, 03:31 PM
I've been watching this thread too and looking around for some time into the alternatives to the $100 Mil. Since these are lux meters rather than PAR meters, I don;t see how there can be much of a difference other than reliability and accuracy. LUX is a measure of intensity, not a measure of the value of a lamp for coral growth. It is primarily useful for determining when a lamp is losing general intensity and it shouldn't matter if one measures at an inch or so above the water surface - therefore "waterproof" dons;t seem to be much of a value added feature to me. A PAR meter on the other hand needs to be able to measure at depth.

Of course, I could have it all wrong.

kuyatwo
09/17/2009, 07:07 PM
lux meters are different than par meters. their is an equation to covert lux to par but you need to know the constant for the bulb you are using

Lux ÷ Constant = µmol·m2·sec

so unless you know exact constant of the bulb you are using your par conversion will not be accurate

http://www.advancedaquarist.com/2008/2/review#h8

lancepender
09/19/2009, 01:43 PM
What are you wanting??

A LUX or a PAR meter??

75.00 for a LUX meter is cheap.. from Milw... I have one and works great..

If you want a cheap PAR meter. Just get a good volt meter from your local tool store that has a mV option. And then buy a underwater PAR sensor from Apogee and just plug in.. Take your light measurements and times by five.. done.

jason2459
09/19/2009, 02:53 PM
<a href=showthread.php?s=&postid=15727723#post15727723 target=_blank>Originally posted</a> by lancepender
What are you wanting??

A LUX or a PAR meter??

75.00 for a LUX meter is cheap.. from Milw... I have one and works great..

If you want a cheap PAR meter. Just get a good volt meter from your local tool store that has a mV option. And then buy a underwater PAR sensor from Apogee and just plug in.. Take your light measurements and times by five.. done.

Nice. Now, I went to Apogee's site and got totally lost. What exactly there needs to be purchase? :confused:

lancepender
09/19/2009, 03:04 PM
Apogee SP-110 (http://www.apogee-inst.com/pyranometer_programs.htm)

Pretty sure this is what you need.. Just email them to verify.

jason2459
09/19/2009, 03:11 PM
Thanks. It's added to my list of things to save up for now.

lancepender
09/19/2009, 03:13 PM
<a href=showthread.php?s=&postid=15728064#post15728064 target=_blank>Originally posted</a> by jason2459
Thanks. It's added to my list of things to save up for now.

no prob..