Before resetting the tank up last week I covered the 15 watt scrubber with JB weld. To my surprise, light still comes through. It's not as much, but it's certainly not catching all the light. I also took out the fry nursery and cleaned any algae, green and brown, from the display tank.
The 30 watt scrubber filled in a lot.
I completely scraped the 15 watt scrubber, and this is what grew back this week.
What's interesting is the growth is on the opposite the side where the lights are. It makes me wonder if 15 watts of leds is too bright still.
Even though in the scrubber the algae looks really slimy, and it is, but when it breaks off and floats around the tank it looks more like hair. Lots breaks off when I removed the scrubber for cleaning.
Here's a picture of the tank.
Another with the scrubber lights on.
I still need to do something about the light and aesthetics now that I know they do the job of growing algae.