This is a pretty good example of the textured RAIN2 tray holding growth that has dropped off the screen. For best filtering, the screen should be cleaned sooner, but if not the tray will help.
This is a pretty good example of the textured RAIN2 tray holding growth that has dropped off the screen. For best filtering, the screen should be cleaned sooner, but if not the tray will help.
This RAIN2 (tm) scrubber has the patented LED dome lid removed and shows some overgrown growth in saltwater. Needs to be cleaned/harvested sooner (tray too), because you can see the dead roots (hay colored growth) on the left side of the screen. The growth ring in the middle (from the strong GEM5 lights) however did it's job of keeping this area open for light and flow to continue; if this area had growth it would be even more blocked from flow and light and would have more dead roots and would let go:
http://algaescrubber.net/forums/show...3-Growth-Rings
Note that dead roots do not occur in bubble upflow models because the growth is always under water.
Also note how easy the patented tray is to clean, compared to box style scrubbers that you have to try to reach down into.
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