Finally got the flow right on my scrubber now and the algae in the tank is beginning to melt like it should. Decided to add another light to speed up the process. Just put the light on a week ago and although I got a really good harvest of algae this weekend, there are a couple of yellow spots showing up. Just wondering if this is something I should worry about. I read in the faq that it may be due to a lack of iron. Is this possible or is it just a lack of phosphates?
Sorry, my cameras not very good for closeups.