Black box led help!!!

[Sexytang]

I have a 165w phlizon over my 40g halfmoon. The tank is 27” tall I can’t find the right spot for the light. Atm I have it 24” above tank.
the tank houses
Rose bubble tip anemones
Mushrooms
Birds nest
Kenya tree
Little zoa frag
Toadstool. I just can’t find a good height to make my nems happy can anyone help

 

[Blknovass]

I have a 165w phlizon over my 40g halfmoon. The tank is 27” tall I can’t find the right spot for the light. Atm I have it 24” above tank.
the tank houses
Rose bubble tip anemones
Mushrooms
Birds nest
Kenya tree
Little zoa frag
Toadstool. I just can’t find a good height to make my nems happy can anyone help

Where is the nem going and did you just upgrade the light? You might have to turn the power down and slowly turn the power. Just acclamation to light.

 

[Blknovass]

Here is my 29 bio cube with my old black box. About 12”

 

[Sexytang]

I’ve had the lights for a long time now just haven’t found the right height my old 16” tall tank I kept my light 13” off 100 blues etc but this one I go 13” and everything gets ticked and closes

 

[Blknovass]

Interesting never had a problem. Maybe you can rent a par meter and see how strong the light is penetrating.

 

[Uncle99]

20-24 inches above the water is about right, why?
-those CBB lights push a lot of PAR, so higher, better.
-higher creates better coverage.
-higher helps to blend the individual spectrums better.

 

[Sexytang]

If I remove my lenses how far should I hang it

 

[LeftyReefer]

Have you watched the BRS black box video? BRS said the Phlizon should be hung 18" above water for the best efficiency. If you want to remove the lenses, you could hang it lower.

 

[Sexytang]

How low you thinking if I remove them

 

[Uncle99]

How low you thinking if I remove them

I would not remove them.
They diffuse the light or your going to get hot spots.
It will look like a disco floor.

 

[Flippers4pups]

Removing the lenses will allow for more light blending, but will reduce the par at deeper levels in the tank. Lowering the light fixture can compensate this effect.

Lenses will focus the light beam. This is highly dependent on the lense type (90-120 degree) Removing them spreads the light out.

 

[Don_Jorge]

20-24 inches above the water is about right, why?
-those CBB lights push a lot of PAR, so higher, better.
-higher creates better coverage.
-higher helps to blend the individual spectrums better.

What strengths would you recommend for the individual lights, i keep hearing 50% actinic 20% white light at this height, would you concur?