My Algae Turf Scrubber, ATS, Build

labas39

Active member
I doubled my water volume and my acros lost a lot of color. I even lost a few colonies. I started to read up on Algae Turf Scrubbers, ATS, and decided to pull the plug and build one.

From my research, I've found three versions: horizontal, vertical and upflow. For me, the vertical made the most sense.

Then comes the sizing. I have approximately 100 gallons but the new way of sizing an ATS is by how many cubes of frozen food you feed per day and I feed one cube per day. Off the top of my head, they're 12 square inches lighting the screen on both sides for 1 cube. I'm lighting on one side because I want to hang the ATS on the wall so I need 24 square inches.

Next comes the lighting. They say 24 watts of CFL per cube per side. LED's supposedly can be 1/5 that amount. Red LED's in the 660 nm range is supposed to be the best.

I read that you DON'T want to go less than the required amount but I haven't seem much about going larger.

With that in mind, I decided to build a 36 square inch ATS. Mine is 6" x 6". I ordered 3 3 watt red LED from www.ledlight.com. They're 6 inches in length which should be perfect. I have no clue if they'll work but I'm willing to try. Since they'll only arrive on Thursday, I'm using an old shop light and a new soft white 23 watt CFL from Home Depot.

I bought the container from the Container Store today. It's like 7.5 x 7.5 by 3 inches. It's totally clear so I shouldn't have any loss of PAR.

I'm feeding the ATS with an old RIO 2100 that I had. I put a 1/2 bulkhead in the side of that Container Store container. I made sure I made the hold VERY SLOWLY. This thing isn't acrylic so it's fragile. I used tubing from the pump to the 90 degree barbed male end.

The drain is 1". Again, I drilled that hold very slowly and put a 1 inch bulkhead in there. I used PVC to dump back into the sump.

I bought the screen today from Hobby Lobby. It's 7 count. I scratched it up using a hole drill so that the algae can root. I used my table saw to make cut down the 1/2 PVC pipe, shoved the screen up there and used zip ties to keep it secure. That was my second option after my first one, which I thought would be easier to clean the screen, was bust because of how the water flowed.

After driving back and forth to Home Depot a few times after changing my mind, the final result is up and running.]

The light schedule is 18 on and 6 off. They'll be on during the night to theoretically keep the pH more stable.

I ended up hacking some wood pieces to keep light out of my display tank but if this works, it's really only a prototype. I plan on making this all out of black and clear acrylic.

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I'm in the process of building one as well.

The LED Mix I'm using is 9 Cree XT-E Royal Blue 6 XP-E2 Red, 3 XT-E Warm White and 3 XT-E Cool White

After doing a lot of research this should give me the best grow per watt.

Bill
 
What algae are you seeding for growth?

Bill

Shouldn't have to seed it Bill, if the screen was roughed up with a good rough sandpaper GHA and Turf Algae should seed itself relatively quickly. Also, if you can, run lighting on both sides of the screen. I run CREE XT-E 2xRB, 2xCW, 2xR on my fuge and it grows chaeto like crazy, I've been considering adapting it to use in an ATS but not sure I can handle the trickle noise in my open sump.
 
That food container had a lid which I put on. With the 1 inch drain below the water surface, it's pretty silent.
 
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im following along as well !! please keep us updated as to progress !

have been kicking this around for a while now ..... what were your parameters before starting this ? did you have high nitrates ? thought acans were pretty tolerant of a wide variety of water parameters ?


good luck !
 
what were your parameters before starting this ? did you have high nitrates ? thought acans were pretty tolerant of a wide variety of water parameters ?

I use a cheap API nitrate test and it started to show a little color. Mostly, however, I have green hair algae growing in my new 65 gallon frag tank. When I plumbed it to my 65 display, I also lost color in my acros in the DT (I don't have acans).

So primarily, I'm going by sight on this one. I'll take pictures of the frag tank as well to show the hopeful reduction in that hair algae.
 
I had a few questions come my way so here are some answers for everyone.

I bought three of the LED tubes in red.

http://www.ledlight.com/led-tube-light-12-volt-dc.aspx

I bought one of these power supplied:

http://www.ledlight.com/led-light-power-supply-2-watt.aspx

and this splitter:

http://www.ledlight.com/3-way_led-light_harness-cable.aspx

They haven't arrived yet so for now, I'm just using a 23W CFL bulb. The LED's are supposed to come in on Thursday so I'll put them on this weekend. Also, in my research, these lights are in the correct color range for good algae growth so I decided to get them. I'm not sure they'll work well but I'm hoping they will.

I'm only lighting one side at this time. For 1 cube per day, I only needed 24 total square inches. If I lit this one two sides, I'd only need 12 square inch plastic canvas. Since I'm only lighting on one side, I need the full 24 square inches. I'm only lighting on one side so that this thing won't extend so far out from the wall. It's a trade off and I chose a larger footprint over depth.
 
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My First Mod

I was thinking that as the algae grows, it may hinder the flow. So that algae doesn't grow over the 1/2 PVC and the top part of the screen near that slit, I cut a 1/4" slit with my table saw on a 1 inch piece of PVC. I then slipped that over the 1/2 inch pipe. Hard to tell but I'm depicting that in the following photo.

If you compare this one with the very first photo of this thread, you can see that the PVC pipe now is the same diameter as the end cap and the black zip ties are covered.

It doesn't appear to be affecting the flow.

View attachment 3793
 
The LED Mix I'm using is 9 Cree XT-E Royal Blue 6 XP-E2 Red, 3 XT-E Warm White and 3 XT-E Cool White

After doing a lot of research this should give me the best grow per watt.

That's interesting. I don't doubt it but I've read a lot of stuff from Santa Monica Filtration and Turbo's Aquatic which have ATS units and they both put all red LEDs in their products.
 
The Reds are important for Shallow Algae like Turf and Cheato.

For deeper Macro Algae like Caulerpa, the 450nm is most efficient per watt.

I have a 440gal tub loaded with Caulerpa and use only a 2:1 Royal Blue Cool White Mix.

I export about 2 gallons every other week.

Bill
 
420-450nm is the most efficient. The shallower algae along with terrestrial plants use the red

PhotoWavelength_zps29db24cb.jpg
 
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