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This RAIN2 with two GEM5 lights has more PAR to grow algae than other scrubbers that use big Chinese lights. This is because the GEM lights are made of an expensive material that handles the heat and...

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.

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Spanish RAIN instructions now posted:

https://algaescrubber.net/RAIN-Instructions-spanish.pdf

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Here is a nicely made DIY pole mount for a RAIN2, and a drain bulkhead added too. Note the microwave ready to cook algae.

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This is a rare situation where a pole mount is not used, but a regular shelf on the top of the sump is not either. Instead this RAIN2 is on a shelf halfway down the sump.

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The RAIN2 with two GEM5 lights is enough light for most situations, and allows you to silicone in two more lights later if needed.

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Updated RAIN2 and RAIN4 instructions in Italian

http://www.algaescrubber.net/RAIN-Instructions-italian.pdf
http://www.algaescrubber.net/RAIN-Instructions-italian.doc

8658

Updated RAIN instruction now available:

PDF:
https://algaescrubber.net/RAIN-Instructions.pdf
WORD:
https://algaescrubber.net/RAIN-Instructions.doc

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This brand new Green Grabber® screen is an "after market" alternative to replace the stock flat RAIN2 screen. This new screen has rails hand-cemented onto the flat screen, giving much more area for...

You might think this is a big screen from a RAIN4 (which is now available again) but it's just a RAIN2. Also it's an older photo with the previous wide-style hanging tabs, whereas the current ones...

Here is the other side of the same screen on the previous post; guess which side had more light.

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Here is one side of a RAIN2 screen, easily pulled up and out of the tray when you want to take it all to your sink for cleaning/brushing. This way you can brush out the pipe slot too.

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This RAIN2 has not quite filled in the screen yet but is growing a lot on the tray below. This is because when the screen is not cleaned soon enough, some growth can fall down to the tray, which has...

This RAIN2 (tm) waterfall scrubber is sitting on a pole mount in a saltwater sump. If you wanted to run the tank as a natural reef with lots of food particles in the water for the corals to eat, you...

Here is an almost perfect growth ring, allowing full flow to the thicker inner parts of the screen:

http://algaescrubber.net/forums/showthread.php?3713-Growth-Rings

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Don't buy fish food. Don't replace filters. Instead, use your filter to feed your fish. MaramotReef on IG shows how it's done:

o The living, green growth can be put right into a fish feeder.

o...

Here are some fun holiday colors, and some descriptions of waterfall growth on a RAIN2

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No the screen is not pink; it's just the deep red 660nm GEM5 lights on the inside of the RAIN2 dome.

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The RAIN (tm) patented tray (10,655,095) and patent pending dome (16848779) allow for easy viewing and cleaning of the bottom tray without turning off water or lights.

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RAIN2 one-handed access to screen and bottom tray video

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https://youtu.be/LbryHi1eUuE

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Customer comments of our RAIN2 waterfall algae scrubber


"I purchased the RAIN2 and I really like it" -- struttmaster on ebay

"I have the SM Rain2. It is the single best aquarium...

This RAIN2 waterfall scrubber looks to be slightly below the waterline in the saltwater sump, which is fine because its GEM5 lights are submersible and can go to the bottom of the sump if needed.
...

This RAIN2 is turned sideways, with the optional pole mount, and is lowered down so the tray is touching the sump waterline. This gives dead silent operation and (if the water rises up enough when...

This RAIN2 really needs to be cleaned/harvested sooner. The slime is great at filtering, but you don't want it letting go down the drain:
...

This RAIN2 waterfall scrubber is tucked down into a sump compartment, but not all the way down to the waterline.

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This RAIN2 (tm) dome lid has only two GEM5® siliconed in, but two more can be easily added later.

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RAIN2 being scraped with a credit card, after being lifted up out of the tray:

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A double setup of RAIN2 waterfall scrubbers; this makes cleaning one easy, while the other continues growing

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RAIN2 waterfall algae scrubber from a saltwater sump, showing black slime growth that has just been brushed clean. Dark and black slime like this should be brushed completely off, including out of...

RAIN2 which looks like the first week operating in high-nutrient water. One of the GEM5 lights is turned on, at the bottom on one side. Note the good even flow of water off the bottom of the screen....

Inside a RAIN2 dome LED lid, showing two of the four GEM5 lights plugged in and operating on opposite sides of the screen, with one higher and one lower, so that the screen is not saturated on both...

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....

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RAIN2 first eight weeks in new saltwater setup

https://www.youtube.com/watch?v=PqJiw97qOqA

RAIN2 waterfall scrubber, first eight weeks in newly cycled saltwater tank.

Note that...

RAIN2 (tm) down low low low to the water line. Dead silent because no dropping of water. Unaffected by rising sump water. And you can lift the whole unit out with one hand to take to your sink if...

Since the RAIN2 (also the RAIN4) has submersible lights that can be lowered down to the waterline, it frees up all the space above it. And since the optional pole mount for the RAIN2 (included with...

This RAIN2 sets on rails across the top of the sump. But as you can see from the size of the drain pipe, the drain could have been the mount instead.

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Another example of a down-in-the-sump RAIN2 install. This one is not down to the waterline, but it could be.

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A reminder that you are never alone when you have an algae monster nearby...

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Nice clean installation in a new sump

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Green Grabber® screen removed from a RAIN2 waterfall algae scrubber in saltwater. It takes about 3 seconds to pull the red cap off and slide the screen out (once the dome lid is removed)..

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Ring!
http://algaescrubber.net/forums/showthread.php?3713-Growth-Rings

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RAIN2 next to a SURF4

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Customer's RAIN2 (tm) scrubber with the LED dome lid taken off, and installed at the sump waterline of a saltwater tank. This installation is dead silent since the water has zero drop out of the...

View your growth while it's still running...


https://www.youtube.com/watch?v=n9t7ZSSokgc

"My 2-light version of the Rain2 has been working phenomenal I think it’s one of the best money spent on my tank, finally I keep control of my nitrates and phosphates, appreciate it and thanks for...

RAIN2 holiday colors!

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RAIN2 is back in stock, at www.Santa-Monica.cc

Getting new stock shortly. All orders should be shipped within 2 weeks.

Welcome from UK, and great to hear.

Italian instructions added:

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