Custom Acrylic Algae Scruber(lots of pics)

ReefCowboy

New member
Trying to ditch GFO and carbon dosing, so figured would give the scrubber and chaeto a try for my new build.


Here is a pic of the sump and the room I had to play with. It is 39" long, 18" wide and 18" high.

There was a bit of room towards the back wall, and the previous dedicated area for the calcium reactor(right) will now become a small fuge(10"x9"x9.5")with Chaeto. Having a scrubber and chaeto will be a guess game as one might overtake the other down the road when No3 and PO4 drop down to low levels.

During this experiment I will evaluate which one is more effective and which one I will keep permanently. Maybe both will be needed with the bioload, who knows.

The chaeto fuge will be lit by a Kessil H380 Grow light. It is overkill but I want to get the best performing light to evaluate the nutrient export.

My idea is fed heavy and export well.
The tank will be a 150 gal sps only with maybe 20 fish, being fed 2x a day. Active fish such as anthias, chromis, clowns, and maybe 2-3 tangs.

So here is the starting sump:



First on to the fuge. I made an acrylic piece to close the back side of the fuge area, inittialy open for the CaRx. There is a pump(behind skimmer) moving water that will hit the rear fuge perfurated baffle and pass through the rear and left pieces of the refugium compartment. There will be enough flow to tumble the chaeto.





I dont like chaeto pieces flowing to the return pump chamber and eventually clogging/requiring maintenance so I decided to make a clear lid, perfurated to allow water to flow up, placed brackets allowing the lid to sit 1/2" below the sump water level. Granted some small chaeto pieces can still make through, but will sure be in less quantity.

I read chaeto, when in contact with the air can leach tanins, making the water a bit yellow. The lid should keep the algae fully submerged, helping with that potential problem.





Now on to the Scrubber. Reading online, found many DIY projects, but found this product to have the best and simplest set up, with a removable cover enclosing the algae screen and light from bleeding all over the sump area while keeping the whole package pretty neat.



The main issue is the screen is only 4"x3", making its export capacity limited IMO. For its retail price( around $350)I figured would build one myself out of acrylic, matching my sump and allowing for a larger screen.

Behind the now fuge is the only spot I had available, along the rear sump wall, over the heaters. I made acrylic brackets to hold the bottom tray of the scrubber. I also made small clear brackets to hold it In place.




So here is the bottom tray. I attached a 3/4" bulkhead to the right where I will connect the pipe tower(supporting/feeding water to the screen). I will then run a silicon hose to a feeding controllable pump underneath the tray, that will connect to the pipe tower and feed water to the algae.
The hole to the left will allow water to leave the tray.



 
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So here is the tray placed over the holding brackets. It sits pretty nicely, leveled and not taking room from the sump. It can be easily removed at anytime, if I need to remove heaters, or anything sitting underneath it.






Ok so now on to the Led/screen cover!
I figured a 13" x 11" screen would be plenty to support my system. It will be lit both sides by high performance leds, so I think it should work effectively.

Here is the end result. I drilled a small hole in one of the sides to allow the led connecting cables to pass through. Once the led bars are in place, I will close the hole with some black heat glue, so no light bleeds through.





I coated the inside of the acrylic cover with FLEX SEAL, which is a thick rubber sealant that will confine the light inside the enclosure, while making it easy to clean saltcreep/ algae if needed down the road.








 
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On to the lights, I have yet to receive them. Ordered 4x red/blue led bars which are designed for algae scrubbers. Will be placing two per side of the screen. Here is a pic:




The Cover fits perfectly over the bottom tray, and removing it wont be difficult as I have plenty of room inside the tank stand. I will be posting more pics once I get the leds installed and pipes/screen placed next. I really like how it came out. It followed the sump design and allowed for the largest screen possible for my system.










 
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Very nice setup! So are you no longer considering a CaRx for your build?

Thank you LQT!

Im so undecided on a reactor.... I already have this custom three part container matching my sump and ATO, along with 2x brand new DOS still in their boxes...the container holds almost 4 gals in each section, so it would take maybe 3 months until I have to refill them at a very demanding pace...it would be super low maintenance. I use BRS bulk so it is super cheap also.


I was thinking I could maybe still ditch them, and have the CaRx and CO2 tank where the three part container would sit inside the stand, but am not sure if it would be cost effective to spend the extras and end up with the same benefits as dosing for a system of the size of mine?..if my tank was a 250-300 gal I wouldn't even hesitate, but 150 gal I'm not finding enough reasons?...what do you think? You have it going for a 57 gal, right? I have that size tank right now!

I was interested on that 3171 Tunze reactor, but nobody has any input on it. A masterflex seems like the way to go, but it is crazy bulky and another expense and variable for Murphy's law :(

Im an equipment junkie with OCD so I can appreciate a reactor, but am weighting my options now...are you set on it?
 
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I plan on dosing through my Apex and BRS dosers at first while things are just frags. I am actively collecting dosing gear though and am totally stoked about building my own custom CO2 regulator, Alanle style. :D Last big project for me is the DIY stand though.

Your gear looks sweet! I've been following since you first got the new style SCA 150 specifically customized for the 20" Synergy overflow.

Looks like we pretty much have the same goals for our new builds... scaled differently, of course. :)
 
I plan on dosing through my Apex and BRS dosers at first while things are just frags. I am actively collecting dosing gear though and am totally stoked about building my own custom CO2 regulator, Alanle style. :D Last big project for me is the DIY stand though.

Your gear looks sweet! I've been following since you first got the new style SCA 150 specifically customized for the 20" Synergy overflow.

Looks like we pretty much have the same goals for our new builds... scaled differently, of course. :)

Thanks buddy, I plan on doing a build thread when I set the tank up. Forums help us connect the build better also. Although Ive been reefing for many years, never ran a reactor, so it all is still very new to me. Building a regulator sounds insane. Do a thread so we can all learn from you.

I feel the CaRx would keep up with alk demands better once sps take off. Something about reactors seem to make me think sps could grow faster with them. Geo's reactors would be my top choice, but the needed 618 model wouldnt fit inside my stand. My wife would not allow me to hang stuff outside it for the new house, so Im working within my limitations :(
 
Once I get all my parts in, I'll document it with photos on the big build your own regulator thread.

We recently had an ARKSC (Area Reef Keepers of Southwest CT) meeting at RTMA's house. He Said that once he set up his CaRx, his tank essentially went into overdrive with growth. His tank is full of gorgeous fully mature SPS colonies, truly a sight to behold. It doesn't hurt that he says that he never has to fiddle with it except to change out the media when the time comes. I've also seen Ca1ore's tank in person, another CaRx user with gorgeous mature SPS colonies. I'm convinced! :D
 
If you haven't already done so, be sure to build a light blocker for your slot pipe. The light blocker will prevent algae from growing where the screen exits the slot pipe. Without one, algae will grow in the slot pipe and you will get streamers and uneven flow across the screen. I learned this by reading a lot about Turbo's Aquatics ATS designs. I DIY'd one by dremeling a section of 1-1/2" PVC pipe. It just so happened to fit perfectly over the fittings of the slot pipe and end cap of my Rain2 ATS.

ATS modifications

ATS modifications

ATS modifications

ATS modifications
 
If you haven't already done so, be sure to build a light blocker for your slot pipe. The light blocker will prevent algae from growing where the screen exits the slot pipe. Without one, algae will grow in the slot pipe and you will get streamers and uneven flow across the screen. I learned this by reading a lot about Turbo's Aquatics ATS designs. I DIY'd one by dremeling a section of 1-1/2" PVC pipe. It just so happened to fit perfectly over the fittings of the slot pipe and end cap of my Rain2 ATS.

ATS modifications

ATS modifications

ATS modifications

ATS modifications

Thanks LQT,

Now you mean algae will grow due to light coming from outise the screen scrubber(from inside sump)? Wouldnt the cover block the light?
 
No, I mean, without the light blocker, algae will grow where the screen comes out of the slot pipe. That causes streamers and uneven flow. The result is this...

https://youtu.be/MtWS55miaDU

Bud Carlson of Turbo's Aquatics makes light blockers, but they only fit over 3/4" slot pipes. :(

https://support.turbosaquatics.com/portal/kb/articles/light-blockers

His new Rev 4 designs have a blocker incorporated into the slot pipe. Notice how the algae only grows on the screen below the slotpipe, not migrating into it, keeping it free and clear for even water flow over the screen.

https://youtu.be/fpWjXXoFMCw

I know my solution isn't nearly as elegant as Bud's, but I'm hoping that it will work to keep the slotpipe obstruction free and flow across the screen clear, nice and even.
 
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You can always go with the smaller Geo reactor, you just might have to fill it more frequently.

Corey

Even the smaller Geo I wouldn't be able to fit inside my sump...bummer.
The space I have is 8.5"x10" footprint max.
Any recommendations of good calcium reactors that would have a small footprint?
How is the Aquamaxx T-1? Worth it?
 
Keep tabs on how Mike (Solitude127) is doing with his Aquamaxx cTech T-1. He seems to like it so far.
 
Keep tabs on how Mike (Solitude127) is doing with his Aquamaxx cTech T-1. He seems to like it so far.

You Rang???? :)

Even the smaller Geo I wouldn't be able to fit inside my sump...bummer.
The space I have is 8.5"x10" footprint max.
Any recommendations of good calcium reactors that would have a small footprint?
How is the Aquamaxx T-1? Worth it?

I have the T-1 and really like it because of the fact that you can put the bubble count on the opposite side of the pump to make it narrower. My available space is smaller than yours and my T-1 fits perfect. As far as the performance the reactor... I'm only 3 weeks into it and it's given me stable parameters once I got it dialed in.
 
Lights for the scrubber arrived...



They are waterproof, sturdy and come really well packed. Got these at expressions-ltd


There are two different spectrums of red leds and one blue.





I was able to build the pipe stand and install the screen. I wanted to make a cleaner set up without the zip ties. Screen size is 12" x 8" with both sides being lit, which should be plenty to process No3 and PO4 in a 150 gal. Removing the pipe and screen for algae harvesting will be easy with a twist of the union valve.



 
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LQT,

Will follow your advice and build a pipe cover, just trying to figure how I will do it :)
I am also redesigning the scrubber acrylic cover to better match the colors of the sump. I wasnt too crazy about how the first one came out. Will post pics once my acrylic guy finishes it
 
How did you hang the screen without zip ties?

Did you cut longer tabs on top of the screen that slide into the capped end and the 90* feed side?

If I missed that in your pics I apologize.

The size of that is going to need some serious flow haha. I think they say 35gph per 1" of screen.

Your 12"×35gph=420gph.

I guess i only run my 10" around 300gph and it's been great. Once you start getting to higher flows you may need to add a few layers of mesh, maybe run 2-4 sheets, and majorly rough them up. The flow rates needed for larger ATS also wants to wash the algae right off the screen. The extra layers gives a good area for it to grab onto.
 
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