1.3 Frozen cubes, or
13 Pinches of flake, or
13 Square inches (90 square cm) of nori, or
3.6 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 HOG1.3 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 mm) to 5/8 inch (16 mm). Not more. If your aquarium wall
is 3/4" (18mm) it might work but you won't know until you try; it would be better to put the HOG1.3 in your
sump instead; it will work the same.
Compared to the HOG2
which look the same in size, the HOG1.3 is meant for
situations which don't have nutrient or algae problems (a new tank, for example). The large inside space of
the growth compartment allows for lots of build up of algae over a long time, and the relatively low power 2
LED light grows algae at a nice comfortable pace. So this model is great for aquariums that are already in
good shape, or new aquariums which don't have problems yet. It also will not require a light-reduction cloth
placed over the LEDs to get started, like the stronger HOG2 might, or the HOG3 does.
The Green-Grabber® algal growth
surface is so rough and prickly that it 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. Old style
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). And the white
color of the Green-Grabber surface reflects as much light as possible, getting almost the effectiveness of a
2-sided growth surface 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 growth
surface, for glass or acrylic 1/4 inch (6 mm) to 5/8 inch (16
thick. This is the typical thickness range for most aquariums, and larger sumps, however you
should measure yours to be sure. 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 (it's sealed
behind the growth surface), so you don't have to get an airstone. The bubbler is simply vinyl air hose that has
been cut lengthwise, and with cross-cuts, to form little flexible segments that are both adjustable and
open-able to allow for easy cleaning. This HOG1.3 will run on both 120V and 240V, and comes with a 10 ft (300 cm) power cord with a U.S.
plug. If you require a different plug you can get an adapter at any local hardware or travel store, or online,
or you can cut off the U.S. plug and install your own plug from a hardware store.
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
Comes with 2 red (660 nm) 3-watt LEDs, which are attached to a heat sink inside the cover. 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 HOG1.3 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 the bubbler with a toothbrush. No hard scraping is needed; just brush it with a
toothbrush. The Green-Grabber growth surface is permanently glued to the inside cover using epoxy, however a
few of the Green-Grabber particles may dislodge during the first few cleanings, which is normal. Cleaning
the growth surface, bubbler, and the inside cover takes about a minute with a toothbrush.
The HOG1.3 comes with a 1 year 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 First Class Package International, but USPS Priority Mail International is better because it
is faster and has insurance. The size of the shipping box is 10 x 7 x 5 inches (25 x 17.5 x 10 cm).
HOG1.3 size: Each cover is 6 5/8" wide x 8 3/4" high x 1 1/2" thick (16.6cm wide x 21.9cm high x
3.75cm thick). It requires at least 7" (17.5cm) of water to operate in.
"Thank you! Working great! [HOG1.3]" -- Daniel Adelinis