Worlds largest, and only, submersible waterfall scrubber

RAIN4 Pole Mount Waterfall Algae Scrubber ATS with Green Grabber screen, GEM5 lights, and pole mount - 4 cubes a day feeding

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model: RAIN4

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RAIN4(tm)

Pole Mount

Waterfall Algae Scrubber ATS

for saltwater sumps

No dangerous metal 240/120 volt lights.

With waterproof submersible GEM5® lights, Green Grabber® screen, and pole mount.

Eliminate waterchanges, remove nuisance algae, nitrate and phosphate.

Cultivate seaweed for feeding.

Replacement screens are [here]

The smaller RAIN2 is [here]

RAIN4 videos:

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

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

Unboxing by 915mang: https://youtu.be/_HacgCB2LlM

Unboxing by Reef Dudes: https://www.youtube.com/watch?v=2wx-CmIoJKY

Sump Placement Examples: https://www.youtube.com/watch?v=4m82K7Mpp3s

Pole Mount: https://www.youtube.com/watch?v=l55MEsOp6eA

Tray: https://www.youtube.com/watch?v=zVa650-QPTM

Water Pipe and Screen: https://www.youtube.com/watch?v=t2zHgcsxi7U

Videos of smaller RAIN2:

Growth review by CJ Aquarium: https://www.youtube.com/watch?v=WF9C0I4MD_g

Install review by CJ Aquarium: https://www.youtube.com/watch?v=1kpWWDUxaQY

One-handed screen removal/replacement (47 seconds): https://youtu.be/zbgbCCpiJGc

First cleaning with just one light: https://www.youtube.com/watch?v=I5mG_uid4Ms

Unboxing: https://www.youtube.com/watch?v=gZ2itYGFFUo

Dome Lid Cover, and Lights: https://www.youtube.com/watch?v=Ba5Hy9gr4FI

Mounting: https://www.youtube.com/watch?v=83_loN1d-Ng

First View: https://www.youtube.com/watch?v=uo0kOIns0GE

RAIN4 product dimensions not measuring pole mount: 10" long x 5" wide x 13" high (25cm long x 12.5cm wide x 32cm high). Dimensions with pole mount will depend on your choice of pole mount segments.

Operates on both 120 and 240V. Can be shipped to any country; you can find shipping costs by putting the item into the shopping cart; be sure to click "display rates"

No dangerous metal 240/120 volt lights.

Welcome to algae scrubbers. We are the only source for patent pending waterfall scrubbers that use our new dome/tray combination. All the oceans, reefs, lakes and rivers are naturally filtered only by algae, and all organic particles remain in these waters to feed the animals. Reduce your glass cleaning and water changes, and create an environment for living micro-animals to grow inside the scrubber. No more dosing or possible overdosing of chemicals. No more refilling media. No more pale corals from low nutrients, and no more sick animals from high nutrients. Far more powerful than chaeto or refugiums, and does not remove any food particles. And you can use the algae as food!

The RAIN4 will do most of the filtering needed for your saltwater aquarium, and in most cases it will do all the filtering if it is the proper size for your amount of feeding that you do and the amount of rock that you have. Part of this filtering includes helping eliminate two very important things that drive most aquarium owners crazy: Algae and waterchanges. The filter works by growing algae on the screen, and these algae consume all the "bad" things out of the water*. This is how all the oceans, and all the lakes, are naturally filtered.

Because of the high filtering photosynthesis of our scrubbers, it's not recommended to run them with macro refugiums or chaeto reactors, because the macro or chaeto will die and the nutrients will be absorbed by our scrubbers.

From the inventor of the original waterfall algae scrubber in the year 2008 finally comes a larger version of the popular ATS waterfall RAIN2: the patent pending RAIN4. The underwater submersible and electrically safe GEM5 lights (also patent pending) allow the RAIN4 to be placed in your sump anywhere you like, as low to the water as you like, which saves a lot of space. And the pole mount (included with the RAIN4) means you don't even need a shelf or a bracket to place the RAIN4; just use the pole mount to set on the bottom of your sump. You can fit two RAIN4 units into the same space that other waterfall algae scrubbers take for just one of their units.

The pole mount that is included with the RAIN4 is recommended for the easiest and most sturdy operation, and it has multiple height adjustments. However the pole mount is not mandatory; you can use a shelf or other technique to mount the RAIN4 similar to the smaller RAIN2 if you wish.

Safety is a prime concern, and our GEM5 lights keep the 240 or 120 volts far away (2 meters way), with only a safe low voltage going into your sump area. The system is so safe that you could cut the GEM5 lights in half and put them in saltwater and nothing would happen. Other waterfall scrubbers, however, use so-called "waterproof" Chinese lights that are bolted onto the outside of the scrubber box, and the 240 or 120 line voltage comes right into the sump area. Not only are these lights not waterproof (don't ever put them in water), they are not even water resistant, and salt creep will eventually get inside them, causing an electrical hazard. Our power supplies are UL and Canadian UL certified. The Chinese lights that others use, are not. And since the six GEM5 lights provide so much power, we've added cooling air vents on each side of the dome cover.

Also included with the RAIN4 is a 2 mm thick, 2 sided, patent pending Green Grabber® algae attachment screen. The screen is also sold separately HERE for DIY, and it is the modern replacement for the old hand-scrapped plastic screens. It is 3D printed in Rough 3D (TM) and has far more algal-attachment surface area than hand-scraped screens. Also, similar to our air bubbling upflow UAS scrubbers, the screen of the RAIN4 is surrounded by air so that when algae growth is strong on the screen, the algae can get the carbon it needs from the CO2 in the air (instead of from the alkalinity in your water) after the CO2 in your water is used up. Thus the scrubber growth (filtering) is not limited by your alkalinity and CO2 in your water, and your alkalinity will stay at higher levels. This is compared to sealed chaeto reactors which don't contact air and thus must get all the carbon it needs from your alkalinity, which causes the alkalinity to drop faster, and the growth to slow down.

The RAIN4 comes with 6 of our GEM5 lights, which will be already mounted to the inside of the dome lid cover. The GEM5 lights are also sold separately HERE and you can add more of them to the dome lid by using silicone glue if you wish. The RAIN4 also includes 2 power supplies (the RAIN2 only has one) so that you can start off with fewer lights when needed, and can control them easier with a controller if you have one. Two power supplies is also great for backup, in order to always have some of the lights operating (photosynthesis water filtering only works when illuminated).

Aquarium size: The RAIN4 has 48 square inches of 2-sided growth surface and is designed to be the only filter on an aquarium that is fed up to:

4 frozen cube per day, or
40 pinches of flake food per day, or
40 square inches (240 sq cm) of nori seaweed per day, or
0.4 dry ounce (11.2 grams) of pellet food per day.

The amount of water in the aquarium, or the dimensions of the aquarium, are not important. If you feed more than the above amounts, you can use additional RAIN4 filters (or use our SURF, HOG or DROP filters) to add up to the amount that you are feeding, and then clean one of them at a time on a rotating schedule (one per week, etc). If you feed much less than these amounts, and the aquarium is very small, then it will still work but you just need to find a place where the filter will fit. It’s not possible to over-scrub.

Click the "image gallery" button above for more pictures, or click here:

http://santa-monica.cc/gallery.asp?catalogid=90

Drain Pipe: Although a drain pipe is not needed, you can add one by using a standard 1” ID drain bulkhead which fits standard 1” (25mm) schedule 40 pvc pipe. The drain hole in the tray is 1 ¾” (44.5mm) diameter.

Head Room: If you are installing the RAIN4 in a sump or cabinet area with limited space, the RAIN4 needs only 2" (10cm) above the top of the light-cover dome lid in order to lift the whole tray unit up off of the pole mount, and then you can remove the light-cover dome lid from the tray.

If you commonly have power outages, all other waterfall scrubbers will dry out after a few hours, but you can prepare for and prevent this with your RAIN4 scrubber by placing it low enough in your sump (even slightly underwater if needed) so that when the power goes out the water level in the sump will rise up high enough to keep the screen under water. The GEM5 lights will not be harmed at all because they are designed for underwater use. With the screen submerged like this, it can last for several days with no flow or light. Do not ever try this technique with other waterfall algae scrubbers because it would be a serious electrical hazard.

The GEM5 lights can be put on a timer so that they stay on for part of the day, and off for the rest of the day, to possibly improve growth and filtering. However you can try 24 hours of light (no timer) if you like because sometimes it does work well in saltwater with high measured nutrients such as more than 1.0 ppm phosphate. But generally, algae need dark time to rest, so plan on getting a timer, especially on a new tank with low nutrients.

The RAIN4 requires a water pump that can pump at least 200 gph (760 lph) water flow 24 hours a day. 300 gph (1135 lph) might be better to fill up all areas of the screen. The height (“head”) of the filter above the sump water level will require that the pump be able to pump up to that level and still be able to supply enough water. Generally, a 400 gph (1500 lph) pump with an adjustable output works in most cases. The water can also be fed from your display overflow; any type of overflow system (Herbie, Durso, siphon, etc) will work.

This RAIN4 will run on both 120V and 240V, and comes with two 10 ft (3 m) power cords with two U.S. plugs. If you require different plugs you can get adapters at any local hardware or travel store, or online, or you can cut off the U.S. plugs and install your own plugs from a hardware store. They are simple 2-prong plugs, and no transformer is needed. Or you can use laptop figure-8 cables from any country; it plugs right into the power supplies.

* Water Changes: If you have been doing water changes to reduce nitrate, phosphate, or nuisance algae, then an algae scrubber filter will greatly reduce the need for them and may possibly eliminate them. When algae grow in the filter, they consume nitrate, nitrite, phosphate, ammonia/ammonium, metals, CO2, and some toxins; so it’s just a matter of growing enough algae inside the filter to do the filtering you need, compared to how many nutrients you are putting into the tank with the food you feed (that is why the RAIN filter is sized for a certain amount of feeding per day). However, this filter (and algae in general) do not supply calcium, alkalinity, magnesium or strontium. So if you wish to reduce or eliminate water changes, and have stoney corals, you will need to supplement any calcium, alkalinity, magnesium or strontium that you were depending on water changes for. Freshwater aquariums, which may only need alkalinity (hardness) to be maintained, may get enough alkalinity from just doing evaporation top-offs with tap water from your sink.

This RAIN4 (except screen) comes with a 1 year warranty: The Green Grabber screen comes with a 6 month warranty. Warranty is for replacement or repair only; not a refund. Costs for shipping back to us are not covered; you will need to ship the entire unit back to us before we can ship a replacement. Warranty is limited to repair or replacement, and does not cover fish loss, personal injury, property loss, or direct, incidental or consequential damage arising from the use of it. The warranty and remedies set forth above are exclusive and in lieu of all others, whether oral or written, express or implied. We specifically disclaim any and all implied warranties, including but not limited to lost profits, downtime, goodwill, damage to or replacement of other equipment and property, and any costs of recovering animals, plants, tanks or other aquarium related items and/or equipment. We are not responsible for special, incidental, or consequential damages resulting from any breach of warranty, or replacement of equipment or property, or any costs of recovering or reproducing any equipment, animals or plants used or grown with this product.

Can be shipped to any country; you can find shipping costs by using the shopping cart; be sure to click "display rates". If you don't have a zip code, enter "zip code" instead. Note that shipping outside of the USA will probably require you to also pay an import charge when it arrives. We cannot mark it as "gift". The lowest cost (but slowest) foreign shipping is generally USPS Priority Mail International, but USPS Priority Express International is faster. The size of the shipping box is 30 x 12 x 12 inches (75 x 30 x 30 cm) and the weight is 15 pounds.

RAIN4 product (not shipping box) dimensions **without** pole mount: 10" long x 5" wide x 13" high (25cm long x 12.5cm wide x 32cm high).

Operates on both 120 and 240V. Can be shipped to any country; you can find shipping costs by putting the item into the shopping cart; be sure to click "display rates"

RAIN Instructions:

Italian (Word)

No returns; please make sure this is the model you need.

Home

New cooling vents on the side of the dome cover:

Side view of the molded tray:

View of the tray upside down:

The RAIN4 setting down low on the adjustable pole mount:

Looking inside the dome cover, with only two GEM5 lights turned on:

Six of the GEM5 lights plugged in:

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 silent. They tray can even go under water if needed, for room. The waterproof submersible GEM5® lights make this possible (see LEDsafety.org). Not shown here is the easy one-handed removal of the dome lid off of the tray, or the entire dome/tray off of the pole mount. This is a patented function of the Rain models:

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 not lower their wattage when operated in the air; they keep full power above or below the water. And the 5 watts is not "equivalent" power like cheap metal frame lights (see www.LEDsafety.org) commonly use; instead it's the actual wattage of each light, which equals 10 watts of other LED lights, each. And there are 6 of these lights in each RAIN4, expandable to 8 lights. The growth is thick enough to reach the LED dome lid and out of the wire outlet like a vine growing along a pole. In contrast, box style waterfalls like our original waterfall (www.ats2008.org) are a pain to disassemble for cleaning, but with the RAIN all you do is lift the LED dome lid up with one hand, and remove the red cap. Note that this installation does not show a pole mount, which is included with the RAIN4 and is optional on the RAIN2. Note also that you will not get this much hair algae growth with your waterfall algae scrubber, whether a RAIN or DIY. You will get less. That's why this was called "The Most". And waterfalls cannot hold on to dark slime growth as well as our bubble upflow UAS models; so even though dark/black slime holds the most nutrients of any growth and does the most filtering, you cannot expect dark slime to accumulate on a screen that is above the waterline...

https://www.youtube.com/watch?v=r5B2bGBtA2s

Pole mount socket, which feeds water to screen:

Green Grabber screen, 8 x 6 inches, 2mm thick, included:

Screen easily slides into pipe slot:

Removable cap for water pipe:

Special fitting inside cap keeps pipe slot the proper width:

Pole mount option can be as low as you want:

Pole mount can even go under water when your sump fills up:

Mounting option on shelf; no holes needed in shelf:

Mounting option on shelf; needs 1 or 2 holes drilled through shelf:

Page from the instruction manual showing smaller RAIN2 but also applies to RAIN4:

Same tray for RAIN4 and RAIN2:

Worlds largest, and only, submersible waterfall scrubber:

A chart to help with sizing, if you don't know how much you feed:

Here are our upflow scrubbers, not including SURF8...

Some of our other scrubbers:

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

Whoa!! This one should have been cleaned sooner... algae has fallen off of the screen: