• info@aquauv.com
  • Phone: (800) 454-2725 | Dialing International: 011 1 (951) 296 3480
  • Mon - Fri: 8:00 am - 4:30 pm PST

Ultima II


UV Sterilizer


Our UV Sterilizers use the best and latest technology for disinfecting water
combined with beauty and modern design for user experience

UV Housing with Premium Material
Unit Design - Created for maximum flow rate.
EZ Twist Cap - Quick and Easy Quartz sleeve maintenance.
Clear Quartz Cap - Glow tells you your lamp is on.

How It Works

Bio-Mechanical filtration depends on the establishment of a colony of bacteria on the surface of the media that converts dissolved toxic nitrogenous waste to harmless compounds.

When the bacteria are given the proper environment, they grow in a thin biofilm on the surface of each piece of media. The larger the surface area, the larger the bacterial colony. Our media surpasses the competition in this area with four to seven times the surface area of any other media available.

Biological and mechanical filtration are essential to every pond. The bacterial bed that builds on filter media will nitrify any ammonia in your pond making it a healthier environment for your aquatic life. Mechanical filtration picks up any debris in the pond, keeping your pond healthier and your fish happier.

Ultima II 1,000

To support aquatic life in bodies of water from 500 to 1,000 gallons.

Ultima II 2,000

To support aquatic life in bodies of water from 1,000 to 2,000 gallons.

Ultima II 4,000

To support aquatic life in bodies of water from 2,000 to 4,000 gallons.

Ultima II 6,000

To support aquatic life in bodies of water from 4,000 to 6,000 gallons.

Ultima II 10,000

To support aquatic life in bodies of water from 6,000 to 10,000 gallons.

Ultima II 20,000

To support aquatic life in bodies of water from 10,000 to 20,000 gallons.

Ultima II 30,000 Top Mount

To support aquatic life in bodies of water from 20,000 to 30,000 gallons.

Ultima II 30,000 Side Mount

To support aquatic life in bodies of water from 20,000 to 30,000 gallons.

Ultima II 60,000

To support aquatic life in bodies of water from 30,000 to 60,000 gallons.

Ultima II  Series -To support aquatic life whether at an aquaculture facility, backyard pond or large aquarium system it is essential to remove both ammonia and accumulated debris. The most efficient way to accomplish this is by installing an Ultima II biomechanical filter. The patented media has the highest biofilm surface for bacterial growth, this beneficial bacteria converts ammonia into harmless compounds. The dense bed of ridged media traps solids without clumping. Internal jets in the filter are activated during the backwash separating the waste from the media and sending it out the waste line.

Do I need to add any additional bacteria to my pond or my filter?
No, your Ultima II filter comes pre-seeded with natural bacteria to help the filter establish itself. For the first 4-6
weeks that your filter is installed do not backwash, this allows the beneficial bacteria to establish.

Do I need to add additional biological or mechanical filtration to my pond?
Not unless your pond has a lot of large debris (i.e. leaves, pine needles, string algae). If you have large debris
in your pond a leaf basket or other pre-filtration system is recommended.

Can I bury my filter?
Yes, you can bury the filter up to the valve head. Please keep in mind that if you need to drain your filter for
winter the drain valve will be buried and other means may be necessary to drain the filter.

How often do I have to Backwash?
For the first 4-6 weeks that your filter is installed do not backwash, this allows the beneficial bacteria to

It is recommended to backwash your filter once a week; however, depending on your fish load and feed rate it
may be necessary to backwash more or less often. After a few weeks you will begin to notice how often it is
necessary for your own pond.

How often do I have to replace the media?
Never, the media does not have to be replaced.

How often do I need to drain out the sludge?
Never, due to the exceptional backwashing system exclusive to our filters, all the waste is expelled through the
waste line, and thoroughly cleans the filter eliminating the need for a sludge valve.

Can I medicate while the filter is running?
No, due to the non-specific nature of most medications on the market any medication designed to eliminate
harmful bacteria in your pond would also destroy any beneficial bacteria inside your filter. If you need to
medicate for any reason, you may set the valve to recirculate which will bypass the filter entirely and run
through the valve only.

What is the maximum flow rate through my filter? (Click here for Ultima II sizing chart information)
75 GPM on 1-1/2″ Models and 125 GPM on 2″ Models.

What size pump should I use?
Your pump will need to be an external direct drive pump. Go to the Ultima product page for information on the
Ultima II Filter size you have.

What’s the flow loss through the filter?
The filter flow loss ranges from 3-8ft of head, depending on how dirty the filter is.

Do I need to oversize my filter?
No, our filters were designed to handle heavy fish loads and heavy feed rates.

What should the reading on my pressure gauge be?
Pressure readings vary depending upon setup, pump, etc. It is normal to have no readings at all on a new filter.

Do I really need to turn off the pump before changing the valve settings?
Yes, if the valve is rotated when the pump is on it can cause damage to the O-rings and seals that is not
covered under warranty.

Why is my pond still green?
The algae that turns your pond green is a microscopic living organism. The best and safest way to eliminate
green water is to install a UV Sterilizer after your filter.

Is the Ultima a sand filter?
No, The Ultima II series filter utilize a patented bio media that traps solids and grows bacteria that nitrify fish
waste. Sand filters are designed to polish water. Never add sand to your Ultima filter; it was not designed for it
and may cause damage to the filter that is not covered under warranty.

Is the Ultima II a bead filter?
No, bead filters use raw plastic pellets that tend to clump and channel making them difficult to backwash and
may require a blower. The Ultima uses a patented bio media that efficiently traps solids, nitrifies fish waste and
has a cyclonic backwash for ease of use.

Do I need a blower?
No, the cyclonic backwashing action in the Ultima efficiently cleans the filter without a blower.

Do I need to add bacteria to the Ultima in the spring?
No, there is no need to add bacteria to the Ultima at any time. The bacteria will re-establish itself once the
Ultima filter is running and the water gets warmer.