April 28th, 2017. Thirteen day cycle. The ATS keeps chugging along. The two week cycle time seems to be the sweet spot for algae production. I continue to get algae growth along the bottom of the scrubber box that has me considering some options for future upgrades; wider box or taller box/shorter screen. Harvest yielded 2-½ cups of algae with a dry weight of 8.55 ounces. The harvests have been relatively consistent over the past couple of months using the two week cycle. My water parameters have remained consistent also. The nutrient levels aren't dropping much by any means, but they are definitely not rising either. I haven't tried dosing iron to increase the algae production rates, nor have I altered any feeding amounts to the tank. Just the other day, I added a filter sock to my sump; prior to the ATS. Immediately, I noticed how much cleaner the water is when it gets to my filter floss after the ATS. It will be interesting to see if the "cleaner" water affects the production of the ATS; my thoughts are that it won't, but I'll keep an eye on it.