Aquarium Spare Parts
Keep your marine aquarium equipment working efficiently with our range of aquarium spare parts, replacement components and practical accessories at Rock ’N’ Critters.
Whether you're replacing a worn component, maintaining your aquarium's plumbing or organising equipment inside your cabinet, having the right parts can make aquarium maintenance simpler and more convenient.
Our selection includes genuine accessories and replacement parts from trusted aquarium manufacturers such as Aqua Medic, Red Sea, D-D and EcoTech Marine, alongside specialist equipment for marine calcium reactors.
From overflow grates and weir combs to dosing accessories, power supply brackets and decorative aquarium cabinet fittings, explore our range of useful products for maintaining and improving your aquarium setup.
Browse our marine aquarium spare parts and accessories below.
Marine Aquarium Spare Parts & Replacement Accessories
Keep Your Aquarium Equipment in Good Working Order
Maintaining a healthy marine aquarium depends on more than water quality and livestock care. Keeping your equipment in good working condition is equally important.
Over time, aquarium components can become worn, damaged or require replacement. Having access to suitable spare parts and accessories can help keep your aquarium running efficiently without unnecessarily replacing complete pieces of equipment.
At Rock ’N’ Critters, we stock a selection of practical aquarium spares and accessories from established marine aquarium manufacturers.
Aquarium Overflow & Plumbing Accessories
A reliable overflow and drainage system is an important part of many sump-based marine aquariums.
Our selection includes Aqua Medic Round Grates and the D-D UltraFlow Weir Comb, designed for suitable aquarium drainage and overflow applications.
These accessories can help prevent larger debris from entering drainage systems while allowing water to flow through appropriately sized openings.
When replacing aquarium plumbing components, always check the dimensions and compatibility with your existing installation.
Aquarium Cabinet Accessories & Organisation
Keeping electrical equipment organised inside an aquarium cabinet can make routine maintenance easier.
Our EcoTech Marine Power Supply Bracket offers a convenient mounting solution for compatible aquarium power supplies, helping reduce clutter and keep equipment securely positioned.
We also stock decorative Aqua Medic Seahorse and Angel Fish Door Knobs, allowing aquarists to add a marine-inspired finishing touch to suitable aquarium cabinets and furniture.
CO₂ Cylinders for Marine Calcium Reactors
Calcium reactors provide an effective way to replenish calcium and alkalinity in established reef aquariums.
These systems use a controlled supply of carbon dioxide to lower the pH inside the reactor, allowing calcium carbonate media to dissolve and release minerals into the aquarium.
Our CO₂ cylinders for marine calcium reactors provide a gas supply for compatible reactor installations.
Always ensure that your cylinder, regulator and associated equipment are correctly matched before use.
Choosing the Correct Aquarium Spare Part
Before purchasing a replacement component, we recommend checking the original manufacturer's part number, dimensions and equipment compatibility.
Some aquarium accessories are designed for specific equipment models, while others can be used across a range of suitable installations.
If you're uncertain which part you require, our experienced team at Rock ’N’ Critters will be happy to help.
Why Shop with Rock ’N’ Critters?
With decades of practical marine aquarium experience, we understand the importance of reliable equipment and having access to the right accessories. Whether you're maintaining an established reef aquarium, replacing an overflow fitting or looking for a particular accessory, we're here to help you find a suitable solution.
If you need more information on our range of aquarium spare parts, then please do not hesitate to get in touch with a member of our team today by calling 01446 737210 or emailing us at customer-service@rockncritters.co.uk. You can even pop into our showroom if you'd rather chat about our aquarium spare parts with one of our experts.