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This new install of a RAIN4 in a saltwater sump, with the LED light dome lid removed,...

A full screen of light-green Cladophora species growth on a RAIN4 (tm) waterfall algae scrubber. Note the bottom of the tray is at the waterline, making it silent, while still allowing space below...

RAIN4 waterfall algae scrubber in a large sump

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All other waterfall algae scrubber designs (which we created in 2008; see Ats2008.org) require you to disconnect and disassemble the unit to get to the growth on the bottom tray. This was a problem....

This RAIN4 screen has a giant growth ring which protects the center section from light-blocking and flow-blocking that often happens otherwise (see...

One-handed removal of a Green-Grabber® screen from the RAIN2 and RAIN4 (tm) scrubber.

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RAIN4 in sump of 20000 Leagues Under The Sea Tank
https://youtu.be/qaZuRPu6UPk?t=736

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Customer's RAIN4 waterfall scrubber, set way down in a saltwater sump, almost touching the waterline. Since the six GEM5 lights inside the dome lid can operate submerged, any water spray or water...

Here is a look inside the RAIN4 dome lid, with all 6 of the GEM5® lights plugged in. The photo had to be dimmed (edited) because the lights are blinding bright 660nm deep reds, and put out 5 watts...

Another new photo of the RAIN4 in position on the adjustable pole mount. Water is fed into the gray 3/4 inch hose barb at the bottom, or, the barb can be removed and a 3/4 inch hard pipe used...

New photo of the RAIN4 (tm). Inside the black dome lid are 6 of our GEM5® waterproof submersible lights.

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Here is a customer's RAIN4 scrubber® in a sump. Note the waterline is touching the bottom of the tray; this eliminates any distance that water has to fall down a drain, and thus makes it dead...

Here is a short version video of our RAIN4 waterfall scrubber in a saltwater reef sump. Why so much growth? Because of the super strong submersible waterproof GEM5 lights (5 real watts each) that do...

First cleaning of RAIN4, with growth ring:
https://www.youtube.com/watch?v=T8WgRwzs3W4


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Our newest scrubber model...

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Here is a customer's RAIN4 with the red cap removed. Can you tell what caused the empty spots on the screen, from looking at the growth on the tray?

Answer: The growth got too thick, too fast,...

Pole mount unboxing and partial install:
https://www.youtube.com/watch?v=hPgHmc-nZOs

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Instructions:

http://algaescrubber.net/RAIN-Instructions.pdf

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RAIN4 unboxing by Devon Reef Dudes:

https://youtu.be/2wx-CmIoJKY

Algae scrubbers, otherwise known as "chaeto killers" because of the high filtering capacity compared to chaeto reactors, have...

The new, larger, RAIN4 waterfall algae scrubber ATS is at:


http://www.santa-monica.cc/product.asp?itemid=90
https://www.youtube.com/watch?v=4m82K7Mpp3s

This is the first view of the RAIN4...