• Welcome back Guest!

    MARSH is a private reefing group. Comments and suggestions are encouraged, but please keep them positive and constructive. Negative threads, posts, or attacks will be removed from view and reviewed by the staff. Continually disruptive, argumentative, or flagrant rule breakers may be suspended or banned.

Lighting Question

jesusq

Guest
Joined
Mar 8, 2012
Messages
29
Reaction score
5
Location
Tomball, TX
Hello, I am starting a new tank and I am setting a 120gal tank with two of the famous ebay block box and after re-wiring and setting the VDM and hanging them 10-12" from the top f the tank, I only see a narrow bean of light.

any suggestions on how to set the lights?

Many thanks
 

Attachments

Luman01

Supporting Member
Build Thread Contributor
Joined
Mar 25, 2017
Messages
1,086
Reaction score
324
Location
Richmond
Looks to be the way you have positioned, rotate them 90 degrees, so the run length wise of the tank.
 

steveb

Director
Staff member
Administrator
Moderator
Board Member
Build Thread Contributor
Joined
Jun 24, 2009
Messages
10,247
Reaction score
1,641
Location
Spring
If they are MarsAqua you can probably get away with raising them higher off the tank and as Luman suggested rotate them 90°.

MA uses 60° secondary optics which is great for deeper tanks but causes that type of issue when closer to the surface. If you want to keep them that close to the surface you can purchase 90° or 120° secondary optics to replace the 60° ones on ebay. The other option would be to remove the secondary optics and try that as well.
 
Top