HOG1x Hang-On-Glass UAS Upflow Algae Scrubber with Green-Grabber surface and Xtra LEDs - 1 Cube feeding per day - MAGNET VERSION
 
Eliminate water changes. Remove nuisance algae, nitrate and phosphate. Cultivate seaweed for feeding!!!
 
HOG1x dimensions: Each cover is 5" wide x 6 5/8" high x 1" thick  (12.7cm wide x 16.8cm high x 2.5cm thick).
 
Operates on both 120 and 240V. 
 
***Can ONLY be shipped in USA.***
 
No dangerous metal 240/120 volt lights.
 
Welcome to algae scrubbers. We are the only source for patented upflow scrubbers: U.S. Patent 9,115,008 and 9,708,207. All the oceans, reefs, lakes and rivers are naturally filtered only by algae, and all the organic particles remain in the water to feed the creatures. 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. No more refilling. 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 the food particles. And you can use the algae as food!
 
Get the no-overflow advantage of an upflow scrubber: since it is ALL underwater, it can't overflow onto your floor.
 
This HOG1x with 4 LEDs is a more powerful version of the HOG1 which has 2 LEDs. More powerful light is needed when the nutrients are high in the water (such as nitrate = 40+, or phosphate = 0.2+ ).  Note: The higher power LEDs will need to be covered by a cloth when new, because the strong light will over-power new growth in the unit and keep it from growing. Once growth starts, the cloth can be removed.
 
The main advantage of twice the LEDs is a stronger ability to filter during periods of high nutrients as stated above, but also to out-compete rocks that have become over-grown with algae. If you don't have algae problems, or high nutrients in your water, you may not need a HOG1x. 
 
Although the space inside the HOG1x is the same as the HOG1 (and thus is still rated for 1 cube of food per day), the additional lighting will cause green growth to occur inside the unit when high filtering power is needed, whereas the less-illuminated HOG1 would still be growing dark brown or black algae instead. 
 
Another time when the higher power of the HOG1x helps is when your display is loaded with nuisance algae and your nutrients measure zero. In this case you have a "scrubber" in your display which is consuming all the nutrients, and you need stronger photosynthesis in your HOG scrubber in order to "pull" nutrients from the nuisance algae in the display. Once the HOG1x is growing and you've removed the cloth from the LEDs, the photosynthesis will be at its highest power.
 
This HOG1x scrubber (tm) has over 24 square inches (150 square cm) of algal growth surface, which is designed to absorb the nutrients from this much feeding per day: 
 
1 Frozen cube, or
10 Pinches of flake, or
10 Square inches (62 square cm) of nori, or
2.8 grams of pellets
 
The number of gallons or liters of water in your tank or sump does not matter. If you feed more than the above amounts, you can get multiple HOG1x units; multiple units are preferred over one larger unit because you can clean one unit per week, and because you'll always have one unit filtering while the other one starts growing again after a cleaning. Multiple units are also good for backup. The magnets attach the outside cover to the inside cover, through the aquarium wall, and can be used on glass or acrylic 1/4 inch (6.25 mm) to 1/2 inch (12.5 mm). Not more. If your aquarium wall is 5/8" (15mm), it might work but you won't know until you try. If your aquarium wall is 3/4" (19mm) or bigger, then put the HOG1x on your sump wall instead; it will work the same.
 
The Green-Grabber (tm) algal growth surface is so rough and prickly that is might be the roughest thing you've ever felt. A cactus might be sharper, but that's about it. Rough surfaces are critical for allowing algae to attach and grow and thus provide strong absorption of nutrients. The rock-hard protrusions stick straight out 1 to 3 mm. Conventional algae scrubber screens are made from "slippery" plastic canvas that is used for sewing and knitting; algae takes a long time to attach to it. Green-Grabber (tm) growth surfaces are not plastic at all; instead they are rock hard and have jagged rough edges and points (don't let children play with them). Green-Grabber surfaces are so good at grabbing algae and letting it grow that you may starting seeing tiny growth spots within hours, instead of days. And the white color of the Green-Grabber surface reflects as much light as possible, getting almost the effectiveness of a 2-sided screen even though it really only has a light on one side of the surface.
 
This is a hand-built Hang-On-Glass® (HOG) Upflow Algae Scrubber® (UAS) with a Green-Grabber (tm) growth surface, magnet version, for glass or acrylic 1/4" (6.25mm) to 1/2" (12.5mm) thick. This is the typical thickness range for small and medium aquariums, and all sumps.
 
If your tank uses thin 1/8" (3mm) glass such as many low-cost 10 gallon aquariums do, this filter is not recommended because the magnets are strong enough that they might crack the glass. You would be better off getting a lower cost HOG.5 filter HERE
 
No electrical parts go inside the aquarium; only air. And the air bubbler is already supplied (its sealed behind the growth surface), so you don't have to get an airstone. 
 
Comes with 3 ft (90 cm) of vinyl airline, but requires a small air pump. Most air pumps will work, but a 2-outlet air pump combined into 1-outlet (using a "T" or "Y" airline fitting) and with a control knob to reduce air if desired, is the most capable in most situations. It is the air bubbles which move water into the growth compartment and up the growth surfaces, and also supply carbon dioxide (CO2 in the air) to the surfaces, which allow algae to grow in the filter. Make sure to put the air pump above the aquarium so that it will not drain any water if it shuts off.
 
Comes with 4 red (660 nm) 3-watt LEDs, which are attached to 2 heat sinks inside the cover; the cover gets warm on the outside. The LEDs will give the aquarium or sump a slight red color at night when the aquarium lights are off. You will need to get a timer so you can run the LEDs for up to 22 hours per day (not 24). The LEDs never needs replacing. 
 
The HOG1x growth surface will need to be cleaned every 7 to 21 days, by removing the inside cover, disconnecting the airline, and taking the inside cover to the sink so you can brush the algae off of the growth surface and bubbler with a toothbrush. No hard scraping is needed; just brush it with a toothbrush. 
 
Visit the Santa Monica Filtration Website for the full description:
https://www.santa-monica.cc/HOG1x-Hang-On-Glass-UAS-Upflow-Algae-Scrubber-with-Green-Grabber-surface-and-Xtra-LEDs--1-Cube-feeding-per-day--MAGNET-VERSION_p_38.html