PAR meter for 149$, group buy

Tom Barr

Founder
Staff member
Administrator
Jan 23, 2005
18,696
740
113
Reefcast.com

Hop on board and buy one, not much and then you can answer far more questions.

Regards,
Tom Barr
 

Gerryd

Plant Guru Team
Lifetime Member
Sep 23, 2007
5,623
20
38
South Florida
Wish this had come out 3 weeks ago before I paid $250 for mine......

I encourage those who can to get one. The results can be illuminating lol

All kidding aside, it has been a great value so far, just to know what I have instead of guessing.....
 

Gerryd

Plant Guru Team
Lifetime Member
Sep 23, 2007
5,623
20
38
South Florida
Matt,

You need the remote sensor to measure under water.

I looked at the link Tom provided and it looks like that is the model they are getting........

Either way, ensure it is calibrated for ELECTRIC and not natural sunlight.
 

ntino

Guru Class Expert
Apr 29, 2008
104
0
16
I read a report, where they compare this one to a more expensive meter, and surprisingly, it was more accurate when calibrated to SUNLIGHT and not electric light - makes no sense, but thats what testing had shown.
 

Tom Barr

Founder
Staff member
Administrator
Jan 23, 2005
18,696
740
113
Good, now folks can get somewhere with light and comparison's.
We are all on the same page and no more of that light watt lux, lumens crap:)

This has been a very long time coming for this hobby.

Regards,
Tom Barr
 

yme

Lifetime Charter Member
Lifetime Member
Nov 30, 2005
643
19
18
if we sort the payment thing to europe without creditcard..... I'm in!

greets,

yme
 

defdac

Lifetime Members
Lifetime Member
Aug 25, 2006
95
0
6
47
Linköping, Sweden
Today, 1'st of november I received this:

Hi Daniel,

I'm sorry, the group buy ended today at 5pm.

Marc



On Thu, Oct 30, 2008 at 9:53 AM, Daniel Larsson wrote:

Hi!,
My name is Daniel and I saw the group buy on barrreport.com and want to join.


Is this serious? Should I cancel the order?
 

Tom Barr

Founder
Staff member
Administrator
Jan 23, 2005
18,696
740
113
You needed to go to the Apogee web site and place the order by 5pm USA Central time.

Then in the text message box of the order, say REEFCAST.
They will then manually apply the 40% discount to the billing.
This is through Apogee, all you do as far as Reefcast goes is use their name for the group order.

I bought one for our club.
I also have one of my own.
I think quite a few folks bought them so there will be a few running around.

Regards,
Tom Barr
 

Gerryd

Plant Guru Team
Lifetime Member
Sep 23, 2007
5,623
20
38
South Florida
I was thinking that if some or all of the folks that get/have this meter (including myself) could post the following info, it would be very helpful to us all:

1. Make, model, type of light fixture. T5, T8, MH, combo, CF, normal floro, incandescent, etc.
2. Bulb mfg, wattage, kelvin rating if applicable.
3. Distance of fixture from the water surface.
4. PAR range at the surface.
5. PAR range at the substrate.
6. Tank dimensions.

That way each person only does a few basic measurements, one just under the surface, and one at the substrate. Then getting a small range by moving the sensor a few inches back and forth would be easy and worthwhile IMO. For those with MH, this may be worthwhile, as the tubes would have more constant readings across the length of the tank.

I thought that this would give folks a good basis for selecting lights based on PAR rather than wpg. Since we all have the same meter it will help eliminate some variations in the results.

It would not be a controlled test or anything scientific, but would give some good and quite possibly surprising info.

Thoughts?
 

VaughnH

Lifetime Charter Member
Lifetime Member
Jan 24, 2005
3,011
94
48
85
Sacramento, CA
I second that motion!! If we all do this in a somewhat standardized way we can really provide some useful information for a lot of people.
 

defdac

Lifetime Members
Lifetime Member
Aug 25, 2006
95
0
6
47
Linköping, Sweden
I will calibrate my PAR-calculator when I get the meter. Then everyone will have easy access to get PAR, PUR and Lux values on any bulb they want!
Here it is:
GTKTest Application

I can also add how Kelvin will change for each bulb with the depth.
 

Tom Barr

Founder
Staff member
Administrator
Jan 23, 2005
18,696
740
113
You will want to measure ALL along the bottom surface and the top surface and a couple of midway points for the PAR readings on each tank.
Just say around the perimeter of the bottom and top surfaces.

This is much more useful information and the data is not hard to collect;)
This way you have a good idea everywhere in the tank for each bulb, tank size, etc.

Regards,
Tom Barr