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Thread: Various upflow growth pictures

  1. #151
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    This overly-stuffed DROP1.2 or 1.2x needed a good cleaning/brushing a while ago. Not only does the growth block water and bubble flow (which is why the growth is bright yellow, because it can't get iron and nutrients), but it can block the circulation holes in the case so outside water can't get in. So a good brushing (including the door, on the left) in a kitchen sink will fix it. Take that growth, and fertilize your garden with it.

    Note also, the top of the yellow which makes a line across the top of the case. This is the waterline on the inside; if the top air hole gets blocked by growth, this waterline will drop lower and lower as the inside fills with air (because the air can't get out).

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  2. #152
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    This is the top side of a customer's HOG1.3 scrubber (the inside wet part) in saltwater. You can tell it's a HOG1.3 because the Green Grabber® white rocky surfaces don't go up the sides; they are on the back wall only.

    The reason some of the Green Grabber white rocky surface are still white is because the top was kept partially out of the water about 1 inch, which keeps the bubbles and salt spray inside the case; you can see the air hole at the top. If used for freshwater, the salt spray is not a concern but the bubbles still are, and they are kept inside as well.

    The growth itself looks like dark slime, but it's actually just very thick green hair mixed with chaeto that is matted down because it's taken out of the water for a photo. It's ready for a brushing in the kitchen sink!

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  3. #153
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    This photo of a customer's SURF8 or 8x shows one side of it (it has two comparments). It is floating in a saltwater sump (Surf models are best for saltwater), and the air bubbles can be seen in four places, where they come up through the growth.

    A neat thing about bubbles coming up through the growth is that the bubbles create a vertical column, or tunnel or pathway, through the growth. This allows the red light above the growth (which is turned off here) to travel further down into the growth, and this helps the growth gets thicker without blocking too much light deeper down. The growth in this photo is about 2 inches (5 cm) thick, and will require two handfuls to take out.

    At this stage of growth, you can reach in and grab the growth and pull it out. When new, however, or when dealing with very high nutrients in the water, the growth will be slime and you will need to take the whole thing to your sink for a brushing out.

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  4. #154
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    Customer's HOG2 scrubber® with the red light removed from the glass. This unit should have been cleaned much sooner, because after the white rocky Green Grabber® surfaces are full of growth, the glass then gets covered with growth. And since glass is smooth and cannot hold on to growth, the upflowing air bubbles will eventually peel the growth off the glass, as it has started to do in this photo.

    Interestingly, growth on the glass increases the total amount of growth, and thus increases filtering, up until it blocks enough light reaching the scrubber surfaces, or until the growth peels off the glass.

    Solution: Clean the glass and the scrubber sooner.


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  5. #155
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    Customer's HOG2 or HOG3 before harvest. Can't tell which one, because a HOG2 does not have strings, but a HOG3 does, and strings might be in there somewhere:

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