Algae Turf Scrubber Filtration
So as mentioned in the beginning, the filtration will be algae turf scrubber based.
A couple of people have expressed curiosity about that.
That means no skimmer, no carbon, few water changes. Yet well fed.
And it means zero nitrates, and zero phosphates, no matter how much you feed.
Really!
You deliberately grow algae on external screens, and scrape that off once a week, and discard.
That algae soaks up the ammonia, nitrates, and a bit of other junk. Then you simply toss it away.
Basically, it is really-old-school, and very natural, but modernized.
The external turf scrubbers are highly optimized to grow algae at a maximum rate.
Note : "Turf" is an old term. Modern ones just grow hair algae.
I have been doing it on my current tank for almost a year now, and it works well.
I admit to having a big bubble algae problem, but I had that with conventional filters, and it is a bit reduced.
But definitely no nitrate or phosphates.
If you install one of these, those will be undetectable in a couple of weeks.
There is a dedicated site to it:
ATS Site
What is the catch???
Well, first, you generally have to DIY it. Although off and on they are available. There is a good one for sale on the site above.
Second, it can use a lot of power. It takes a lot of light to grow all that algae efficiently. Although LEDs really help there.
Third, it is tricky to get right. Getting it to the point where your nitrates go to zero is moderately easy.
Getting the right lighting, right pump size, rough enough screen, light timing, all sized for the tank, is a pain.
But getting it to where it is optimized enough to out-compete the algae in the main tank is very hard.
I have not succeeded in the latter yet.
Also, you MUST clean it every week. Although not like that is much different from normal filters.
My setup:
I will have two external ATS boxes. Each box has vertical screens, with lighting on both sides.
Each box is about 20"W x 14"D x 14"H. So it could fit under a tank, but mine is in the garage.
Screens = Two x 20" x 14" = 560"2, dual sided = 1120 sq in of surface total.
LED lighting. High efficiency LEDs, somewhat spectrum optimized for algae, about 60W each = 120W.
Lights run about 14 hours/day.
Two 900 GPH pumps from tank up to scrubbers, gravity return to tank. Pumps run 24/7.
Enclosed is a quick pick of one box.
The pipe at the top is where the water enters.
There is a slot in that, where water pours out relatively evenly to the screens.
It flows down the screens, then returns to tank.
The lights will be on each side.
I am more active in the details on the ATS site.
Main ATS build link
LED lighting for ATS
Setup on Current 55G tank
Big long thread on LEDs for Algae
Attached files
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