Jump to content
SaltyBuddha

Mini Tide Par Values

Recommended Posts

@DaveFason

 

Are the values for the mini tide correct on the website?

 

It seems odd that the 12" readings would be higher than the 6" readings for the measurements?

 

https://www.marinedepot.com/Nano_Box_Reef_Mini_Tide_Plus_M_LED_Light_with_9_inch_Gooseneck_Black_LED_Light_Fixtures_for_Aquariums-Nano_Box_Reef_LLC-6X50963-FILTFILD-6X50963-vi.html

 

Capture.thumb.JPG.0d731e28de8e50838dec949df556d8ba.JPG

 

edit: maybe it has something to do with the optics?

Share this post


Link to post

The 12" readings are higher in the 2 outer sections due the light distribution. There is a significant decrease in the par value in the middle ring at 12" and 18". The light being placed only 6" from the sensor decreases the lights spread and the reason why there is a significant hotspot in the middle. At 12" the light distribution is more evenly disbursed. 

  • Like 1

Share this post


Link to post

While the light cone may explain the lower PAR around the edge closer to the light source (just imagine a party hat, or a traffic cone).  It is interesting to note, however, that between the 6" from sensor and 18" from sensor, the only difference is the center reading.  ALL other values are the same... 

  • Like 1

Share this post


Link to post

I made a lighting guide to help and one of the most important factors is light height. I do not use optics making this pretty crucial. 

 

A factor that most people forget is the reflection from the glass. This will increase PAR numbers on the front and sides on a majority of tanks. 

 

Lighting Guide :

 

 

 

Hope this helps!

  • Like 1

Share this post


Link to post
3 hours ago, DaveFason said:

I made a lighting guide to help and one of the most important factors is light height. I do not use optics making this pretty crucial. 

 

A factor that most people forget is the reflection from the glass. This will increase PAR numbers on the front and sides on a majority of tanks. 

 

Lighting Guide :

 

 

 

Hope this helps!

I did not even think of light reflection. Makes sense. 

 

Thanks for the responses! 

  • Like 1

Share this post


Link to post
2 hours ago, SaltyBuddha said:

I did not even think of light reflection. Makes sense. 

 

Thanks for the responses! 

For the original question and par mapping,

 

I think* that the "beam" of light is divergent. Meaning, it exits the sources and spreads out like a cone, so if the light is closer to the par meter, there hasn't been adequate distance for the beam to diverge the more intense light outward.  There is a sweet spot, as dave has mentioned, of where divergence is optimal for spread, before fall off of par starts to occur because of distance. The inverse square law applies. 

 

(*sorry, as I'm pulling this information from the radiation field)

Share this post


Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recommended Discussions

×
×
  • Create New...