Looking for PAR meter

[mehaffydr]

I am going to be working on improving my lighting but first I need to know where I'm at now.
Does anyone in N. Alabama have a PAR meter that I can borrow or rent?

 

[8675309TT]

Need a PAR reading?
I love BRS but they no longer rent out PAR meters for $70. Now you purchase and return them with an $80 stocking fee. Not bad, and I don't blame them for not wanting to be in the rental business, it seems like it would be a PIA.

Here's another option...

I have zero ties to this company but they could be quite good for reefers? They have a PAR meter app that supposedly only deviated 5-7% from an Apogee SQ-520.

Underwater stats are here:

Underwater PAR Measurements for Reef Aquariums

The entire reef ecosystem depends on light for photosynthesis, which is measured as photosynthetically active radiation (PAR). But without correction, PAR meters calibrated in air provide only relative values underwater. This article explains how to take accurate PAR measurements underwater.

growlightmeter.com

App is here:

Photone - Grow Light Meter

The grow light meter app to measure PAR / PPFD, DLI, lux / fc, or Kelvin with your iOS or Android phone. Including PPFD meter and DLI conversion for plants.

growlightmeter.com

It does need a homemade white paper filter/diffuser.

 

[Mathew0]

How does this work in a reef tank? Do you put your phone in a zip lock bag and hope for the best?

 

[mehaffydr]

I bought an Apogee PAR meter I think this will be the most accurate.