Has anyone used a grow light like this one for pulsing Xenia? : http://www.amazon.com/gp/product/B00PBCG8X0/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1 I have a 40 gallon sump, and have one area sectioned off as a fuge with macro algae already. I have a second, larger chamber that I would like to use to grow Xenia for nutrient export. I definitely don't want these guys in my display tank since they tend to grow like weeds, but my research shows that they one of the best options for heavy metal and nutrient export. Ther above bulb is already growing my macro algae great, so i'm mainly wondering if the spectrum will be ok for Xenia as well.