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Thread: SURF2 and SURF2

  1. #91
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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, just like natural seaweed uses at the beach and reefs.

    Some people ask why the inside of the SURF is white, which you can see with the algae pulled out in the second photo. The reason is because white reflects the red light back to the algae at the farthest point away from the light, which is where the light would be weakest. As opposed to a waterfall, where light travels mostly through air, the growth in a bubble upflow scrubber has to go through algae most of the way. So reflecting it back to the algae keeps it brighter, using the same wattage light.

    The growth in this photo is almost all Cladphora. Add some vinegar and olive oil, and it's a great salad...

    Click image for larger version

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  2. #92
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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 floating scrubber photos) so the growth has settled on the bottom, and has mixed with some darker slime where the light is very low (lower light, with higher nutrients, makes dark slime). Also some brown slime is around the edge of the lid light, which is also a low-light area. The Green Grabber rocky surfaces hold on to the slime well.

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

    Click image for larger version

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  3. #93
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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.

    This type of Surf growth is very rare, but the beauty of scrubbers is that they grow what they need to grow based on conditions. This one will probably start getting some brown slime on the Green Grabber rock walls, and then on the bottom underneath the green. If more food is given to the tank, the bright green will darken up to consume more of the nutrients (darker growth has more nutrients).

    Also very neat with Surf models with this growth, is that you can just reach in and get a handful. Then just set the light back on it, and you are done. Of course if you are getting dark slime because of very high nutrients in the water, you'll still need to take it to your sink for a brushing.

    Click image for larger version

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