Aquarium supplies in Northwood and Watford

For quality aquarium supplies in Northwood and Watford, rely on Underwaterworld. If you do not find the aquarium equipment you’re looking for, we can source it for you. Here are a few FAQs about aquariums and our services; please have a look at them.

Our Services

Installations

Equipment

Maintenance

Fish & Coral

Calcium reactor:
A calcium reactor maintains the calcium levels in an aquarium. It keeps the calcium level high, while keeping the pH factor low. It has a sealed chamber where CO2 gas is injected into the water to convert it into an acidic solution. A sump within the reactor pumps the water back to the aquarium, therefore increasing the calcium level. The high calcium level keeps corals and invertebrates inside the aquarium in good health and helps them grow.
Kalkwasser mixer:
A Kalkwasser mixer is a unit that raises the pH level in the aquarium. The unit is filled with approximately 8 tablespoons of Kalkwasser powder and RO water, and topped up with water through a separate tank. A float switch inside the aquarium is turned on when the water evaporates. This starts filling up the mixer and over time the water overflows into the sump, raising the pH levels.
Sump:
A sump is a tank fitted underneath the aquarium. The water from the aquarium overflows through a hole that is drilled in the back or underneath the aquarium. This water is filtered through the media, heated, skimmed and is fed to the aquarium through an inbuilt pump. The entire process remains hidden in a cabinet and this makes it convenient to work on and clean the sump.
External power filters:
An external power filter is a sealed canister fitted below the aquarium. It can be fitted either to a saltwater or a freshwater fish tank. It helps to remove solid waste from the water. The clean water is then colonised with bacteria for the fishes and corals to thrive.
Calcium reactor:
A calcium reactor maintains the calcium levels in an aquarium. It keeps the calcium level high, while keeping the pH factor low. It has a sealed chamber where CO2 gas is injected into the water to convert it into an acidic solution. A sump within the reactor pumps the water back to the aquarium, therefore increasing the calcium level. The high calcium level keeps corals and invertebrates inside the aquarium in good health and helps them grow.
Kalkwasser mixer:
A Kalkwasser mixer is a unit that raises the pH level in the aquarium. The unit is filled with approximately 8 tablespoons of Kalkwasser powder and RO water, and topped up with water through a separate tank. A float switch inside the aquarium is turned on when the water evaporates. This starts filling up the mixer and over time the water overflows into the sump, raising the pH levels.
Sump:
A sump is a tank fitted underneath the aquarium. The water from the aquarium overflows through a hole that is drilled in the back or underneath the aquarium. This water is filtered through the media, heated, skimmed and is fed to the aquarium through an inbuilt pump. The entire process remains hidden in a cabinet and this makes it convenient to work on and clean the sump.
External power filters:
An external power filter is a sealed canister fitted below the aquarium. It can be fitted either to a saltwater or a freshwater fish tank. It helps to remove solid waste from the water. The clean water is then colonised with bacteria for the fishes and corals to thrive.

Do you provide emergency services?

Yes, we provide 24-hour emergency call-outs across Northwood and Watford. We can find any fault with your aquarium and fix it as soon as possible. As we stock a range of aquarium equipment, we can replace any damaged equipment at the earliest possible opportunity. Get in touch with us for further details.

Do you provide aquariums for rent or lease?

Yes, we can rent or lease out aquariums to homeowners, commercial space owners and films sets. We can design aquariums as per your specifications and rent or lease it out at affordable prices.

Testimonials:

“I would just like to thank Mark and all the staff from Underwaterworld. Really pleased with the results. Thanks guys.”

– Jay Ojuederie

“Mark and his team are very friendly, knowledgeable, and always at hand should we need assistance. They maintain a high level of customer relations, we are pleased to have done business with them, and have given their names to other companies.”

– Chris Turner

“Mark and his team have been maintaining my aquarium for over a year now. They provide a consistently reliable and high quality service and I know that I don’t need to worry about the job being done the way I would like it. I would have no hesitation in recommending them to others.”

– Gary Acton

Aquariums built to suit your taste and budget

At Underwaterworld, we can create striking aquarium designs, no matter the size or budgetary constraints. We are specialists in fish tank designs and installations, providing custom aquariums that can enhance any space. You can also contact us for aquarium equipment, fish and corals, and maintenance services. Have a look at our past projects and get in touch with us for similar kinds of services.

to book an appointment today, Call us on