Algae for mixed reef

[FDchase]

So I have a 14 gallon cube. It just has an in tank overflow filter and a 2k gyre, so there is no sump for refugium. To help with some nutrient export I wanted to plant some macros behind the rock work. It will be fairly low flow low light. What would be good algae that if it grows well it won’t bother sps that I want to plant along the top ridge of rocks. I also have a tuxedo urchin so I’m not even sure if I can keep anything without it immediately eating it.

 

[blaxsun]

Urchins do love to eat...

 

[GoM_reefs]

You'll have a really hard time with any macros under those lights and especially with an urchin. I'd recommend a HOB refugium, either DIY out of a filter or one from BRS.