I must admit that I did not read all 28 pages of this thread but I did see some algae scrubber designs on here.
Any algae scrubber will be a benefit to our water. Algae is the best way we have to remove nutrients, even better than water changes because algae also put some things back into the water. No, I don't kniow what that is but from experience I can say that whenever my tank has had an algae cycle, the inhabitants looked better.
Anyway, I like algae. Today I ran my hand through my algae trough and came up with this.
Yes, disquesting, I know, but it only grows in the trough (or tray)
One big benefit of an algae scrubber (or trough) is that we are forcing algae to grow where we want it and not on our corals. It grows on all healthy reefs in the sea and if no algae is growing in your system, then I feel you have a problem. Thats just me though.
I want it growing in my system, but not where I can see it.
My system works for free and costs less than $10.00 to build but you do need room for it above the water. It will work anywhere but I want the waste lighting in the tank to power it as well as the outflow of the skimmer. It is a no maintenance, free, system that I find, works. As I said, any algae system is better than none.