Hey there everyone!!! I see this is starting to come up as a question regarding the maintenance of the HOG scrubber. I have had mine running for about three weeks.
First off, it did a great job of growing algae in the unit. See pic below.
I took my scrubber out yesterday for cleaning for the first time. It is recommended to clean out at approx 21 days. I took out the portion that is inside my DT and used a toothbrush to remove the excess algae and the algae that is starting to break down. That was a lot of gunk to remove. Using the toothbrush allows the removal of large quantities of algae, but leave the smaller stuff still inside as the seed for the growing of new algae.
I think it is still too early to tell if this scrubber will in the long term produce the desired results of reducing algae in the DT. I think it is going to take a while longer to determine this. I will talk about this at a later date once I can give a good review on this scrubber.