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Thread: Various upflow growth pictures

  1. #51
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    Here's a customer's HOG3 or 3x or 3xx in saltwater. The Green Grabber® strings are shown touching (and rubbing) the glass, and when bubbles are rapid this has the effect of cleaning growth off of the glass so that more light gets through.

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  2. #52
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    This is a HOG1x (you can tell by the black LED heat sink at the bottom of the left side) in saltwater. It shows a few interesting things:

    1. The growth is hand-harvestable (in saltwater) once you pull the inside part out of the water. For freshwater, you always need to brush it out with a toothbrush because freshwater growth is much thinner and more slimy.

    2. The growth is concentrated in the middle, where the red light is strongest.

    3. The growth is pushed up against the glass, preventing growth on the glass itself.

    4. The top 2 cm of the inside (wet) part is above the waterline; this recirculates water inside the unit which makes nutrients lower inside the unit than outside, and is great for high nutrient water. Also it runs more quiet because no air bubbles are rising up, and it keeps almost all salt spray inside.


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  3. #53
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    This customer's HOG3 or 3x or 3xx in saltwater shows a combination of slime and green hair. The Green Grabber® strings have most of growth here, and should be cleaned by scraping the strings. The Green Grabber rocks can just be brushed.

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  4. #54
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    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 660nm deep red.

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  5. #55
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    OK, this is more thick green growth then most people will get, but this customer's HOG3 or 3x or 3xx in saltwater is still fun to look at.

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  6. #56
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    This is a customer's SURF4 or 4x (or possibly half of a SURF8 or 8x) in saltwater. SURF models are best for saltwater because of the strings which fill in the middle section for growth; for freshwater it is better to not have strings, such as on our smaller HOG and DROP models.

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  7. #57
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    This customer's HOG.5 show a rare pattern of growth only in the middle. The growth is Ulva Fasciata and is common in saltwater; it looks just like Easter basket grass and is probably the favorite food of tangs.

    This scrubber would be too small to do enough filtering for a typical tank with tangs, but if the only purpose is to feed the tangs then it would supply a good bit of food a few times a week, by opening the case and letting the tangs pull the growth off.

    This customer also made larger holes in the case, but this is not required unless you want the growth to flow out and feed the fish automatically. Matter of fact the fish will learn to pull the growth out of the holes themselves, and will thus auto-trim the growth, so that no cleaning or harvesting is ever needed by you.

    This same auto-feeding process happens in freshwater, although the growth is the thinner Cladophora (angel hair) or Spirogyra growth.

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    Last edited by SantaMonica; 05-29-2018 at 10:58 AM.

  8. #58
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    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 scrubber photos) so the growth has settled on the bottom and mixed with some darker slime there where the light is very low. Also some brown slime is around the edge of the lid light, which is also a low-light area.

    The strings can barely be seen but are on the right side:

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    888-CORAL-REEF

  9. #59
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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 growth on them yet. But they will.

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  10. #60
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    Another photo of two SURF2 or 2x or 2xx scrubbers from the UK customer above. Here you can see the white edges of the Green Grabber rock surfaces are much more covered in growth, which is the normal process because algae eventually covers all rough surfaces that have the proper light and air/water interface turbulence.

    Of more importance here, is the fact that there are two scrubbers instead of one. Two smaller scrubbers is always preferred over one larger one, because scrubbers actually remove nutrients from the water, but do so mostly when they are growing thick hair or thick slime algae. When you clean a scrubber all the way down to the white reflective surfaces, you don't have any more thick growth for a few days, and you will see the difference in how long your display glass stays clean and other ways. So by having a second scrubber that you clean on alternating schedules (one every 5 days, for example), you always have the other one growing thick and filtering.

    Other aquarium filters, however, such as protein skimmers, filter socks, etc, don't remove any nutrients at all, and thus it doesn't matter if you only have one of them because cleaning it won't change anything.

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