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This SURF2 or 2x or 2xx scrubber® shows some of the bare Green Grabber® strings at the top, but if you look close you can see green growth following some of the other strings.

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A SURF2 floating in some extra space in a saltwater sump.

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This SURF2 or 2x shows one of the upflowing bubble holes in the middle of the algae; these holes allow light to go deeper down into the growth.

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Looks like the heads of two fish, close together and frozen in time, with so much fresh living algae to eat that they got stuck.

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This SURF2(tm) or 2x show an earlier stage of growth on top, and a more filled in stage on bottom. RAINs are for saltwater only. Reach in and grab some :)

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This looks to be a SURF2 or 2x with some Green Grabber® screen cut up to fit in with the strings. Some have said this helped, and others said the strings were enough by themselves.

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Here is a hand-grab of growth out of a SURF2 or 2x scrubber® floating in a sump. When growth is green hair algae, this is the easiest way.

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New black epoxy finish:
https://youtu.be/ks9ccPZNu5Y
https://fb.watch/mfQGt2kw22/

This SURF2 or 2x scrubber® is in a small saltwater sump compartment, and is not affected by the salt splash buildup.

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This SURF2 or 2x or 2xx is shown after being pulled out of a cylinder tank during a water change. Since there is no sump, the SURF floats at the top. And since this is saltwater, a SURF (which has...

Some tanks have no sump at all, not even on the back. If there is enough floating space on top, and it won't block the lights, a SURF scrubber is a possible solution.

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This is less Creature Goo, and more Ulva Fasciata from a SURF2 (or 2x or 2xx)

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Not as much red in this holiday growth, but there is lots of mashed-up Cladophora, with some yellow slime and some brown slime. This actually should have been harvested/cleaned much sooner, because...

Coming back into stock now, the SURF2 scrubber®. Shown here is how you lift up the lid to view the growth.

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Can you spot the SURF2x in this round tank?..

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A new SURF2 or 2x with light removed, and black shade cloth which was covering the left side. Since the left side was growing more, and was shaded, this tells you that more of the area should be...

SURF2 harvest from saltwater. The water level is just below the arrow.

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Green Worms! Actually, this SURF2 or 2x scrubber® is just showing an ultra rare type of growth which "fluffs up" on the Green Grabber® strings. It's not better; just different. And it needs to be...

The SURF2 scrubber® takes no space above or below it, so it fits almost anywhere.

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Update: Since the Fusion 700 air pump is no longer available, the Danner AP-4 is now recommended for most scrubbers, except the SURF4 or 4x which can use a Danner AP-8, and the SURF8 which needs a...

This is not mud. It is living, growing, macroalgal slime that has consumed nutrients out of the water. The worm-like things are Green Grabber® strings attached to the bottom of the Green Grabber...

Like instruction manuals? Here's ours for the SURF models..
http://www.algaescrubber.net/SURF-Instructions.pdf

Also in Arabic...
http://www.algaescrubber.net/SURF-Instructions-Arabic.pdf

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This customer in the UK has growth that almost looks like green candy in this SURF2 or 2x or 2xx. This scrubber is probably only a few weeks old, because the white Green Grabber rock walls have no...

This is a customer's SURF2 or 2x or 2xx that has been running for quite a while in saltwater. In this photo, the water has been drained out (unlike most floating scrubber photos) so the growth has...

Here is a customer's old SURF2x in saltwater. This old model has the old light-frame which did not block the red light from getting out like the current models do. Light is the same though, pure red...

Customer's SURF2 or SURF2x floating on a saltwater display. Can't tell which model without looking at how many red lights there are in the lid though.

It's a large surface area display, so the...

Arabic instructions for SURF scrubbers®

http://algaescrubber.net/SURF-Instructions-Arabic.pdf
http://algaescrubber.net/SURF-Instructions-Arabic.doc

(Need English?...

Growth before harvest, of similar SURF2xx:
https://www.youtube.com/watch?v=bmA7ZxpO7uE

"Here is pictures of my Only SPS system in KUWAIT, My system is running without any refugiums, chaeto reactors, Biopellets or any NO3 reduction dosing.. but running only with Surf2 algae scrubber,...

This similar but more-light SURF2xx is shown here floating for its first day in the sump of a large cylindrical saltwater fish only tank maintained by Jim Stime / LA Fishguys.

The super bright...

Here are some SURF comments without pictures:

http://algaescrubber.net/forums/showthread.php?3287-Customer-comments-and-pics-of-Santa-Monica-Filtration-scrubbers&p=40155&viewfull=1#post40155

"Bought the SURF2x, absolutely love it! Would never run a system without a SantaMonica scrubber again!" -- Tannum_Paul on the MASA site.

Odilon Zerecero SURF2x from Mexico:...

"I recent removed bio-pellets, GFO, and trimmed off a lot of macro algae. Oh yeah, overfeeding now to try and bring up my phosphates. Since removing a bunch of nutrient exporting systems like...

"The [SURF2] has really taken off" -- Reefindownunder on the scrubber site:

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Luis Iarossi on the IPAQ site, translated from Portuguese by google: "Earlier this year the glass of my [DIY] algae scrubber (Model Basso) broke. Due to lack of time and manual skills,...

Translated by Google: "I have a SURF2 and it is impeccable, it keeps my PO4 zero distributing 3-4 cubes of food per day. The HOG1 it's the same thing on a smaller scale, it depends on the amount of...

Pic from Damien Kwok; his SURF2 was put into a newly-moved tank, and this moving of the rocks killed the periphyton on the rocks which stopped the natural filtering and thus the phosphate went up...

"Currently I have two algae scrubbers that I purchased from Santa Monica. SURF2 and SURF4. SURF2 is powered by Fusion 700 and SURF4 is powered by Coralife Super Luft SL-38. I can grow significant...

Updated recommendation:

The SURF2 is for water with phosphate less than 0.2 ppm; if phosphate is higher, get the SURF2x.

"The [SURF2] at my office is doing great. I would like to order another one for my home tank". -- Thomas Perry

"This is one weeks growth, I'm pulling out a lot more turf now it's certainly got a hold on the ribbons and the textured walls of the box. I tested phosphates a couple of days ago on the Hanna...

"I am currently using the SURF2 on my zoa garden. It is way oversized for my system but works well. Just takes a little longer to grow" -- Landon on the NTRF site.

"My SURF2 is doing very very...

Looks like scrubbers may grow more pods than first suspected. Especially upflows, when you don't take them to the sink for cleaning (in other words, you just reach in a grab algae). This explains why...

Welcome,

GFO and carbon dosing, have in the past caused scrubbers to slow down. It won't hurt them, but they will slow down. So yes I'd get the scrubber growing then remove the GFO and vinegar.

The SURF2 is now also available with a higher-power light that has 6 LEDs instead of 4. It is called the SURF2x and is available by choosing the LED option on the shopping cart page:
...

Thousand of organics, and some inorganics, which you can't control or adjust.

As I get pics by email, I'll post them. Here is Dexters Reef from RC:

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There are actually many more things needed; but only light, flow and attachment are controllable.

This is to a large amount what I would have said, with the addition of "photoinhibition". With hardcore photoinhibition, there is too much light for the amount of nutrients. A reduced period won't...

The sweet spot is simply to watch the growth, and adjust the light accordingly. That's the beauty of the timer :)