Scrubbed and clean

I spent the morning scrubbing salt and cleaning tanks. The mysterious algae in the newest tank seems very persistent. I scrubbed it off the front, so it moved to the back. I scrubbed the back, it moved to the front. And so on. It leaves small green thread-like strands on the tank when I scrub and there is a brown substance that aggregates onto the strands in a few minutes. I scrubbed what I could, hopefully the filters will get some of it. I dropped the light duration in hopes it will starve the algae. We still need to get plexiglass cut for the tops and to work on getting more flow through both compartments.