Sump light on 24/7?

[nlreefguy]

Originally Posted by Ryan

Doesnt anyone remember grade 9 science class? Plants need darkness to photosynthesis properly, studies have proven this. You want the most out of your macro algea it needs atleast 10hrs of darkness with a 12 on /12 off pattern showing the most photosynthesis in plants.

To say that nobody remembers grade 9 science class is on the insulting side, man. Sorry to point that out and not trying to be confrontational or anything. However, there is something to what you say about the effect of darkness on photosynthesis efficiency... see the ideas in this link as an example:

http://www.aslo.org/lo/toc/vol_8/issue_3/0338.pdf