I should have said "except for rock or sand".especially the usual reef setup with tons of live rock.
This does not do anything "for safety". It just removes 1/24 of the food of the day.run a protein skimmer automatically an hour/two per day, for safety.
Not true at all. Algea is the natural filter and feeder of the entire ocean. The reason that the balances are what they are in the ocean is because the algae made it that way. So when you use algae, the levels get to where they need to be. Plus, many tanks, including mine, have gone a long time with algae-only filtering. Some 10 years. Matter of fact, it is the NON-use of algae that gets things "out of whack", because then you don't have the natural feeder and filter that operates the ocean.This will result in people doing ok for a while, then having various corals and such get oddly sick as various chemical concentrations get out of whack.
This doesn't mean anything. If people are going to come to this site and build something that is "supposed to work on their tank", then it's irrelavent how much algae grows on thier screens. All that matters is how much filtering they get.You get enough green algae growth on your screens to be worth scraping off every week. Basically, this means the light/flow/screen is good enough for basic functionality.
Correct.But while algae growth has really slowed in the main tank, it is still there, so I
need to make my ATS larger and tune it to really out-compete, before I can consider it a great success.