Grech Internal Aquarium Filters

Grech Internal Aquarium Filters

Grech Internal Aquarium Filters are fully submersible internal filters that combine filtration, oxygenation and wave making in one compact unit. They suit aquarium keepers who want a quiet, energy-saving filter with an adjustable outlet and tool-free maintenance.

Key Benefits

• Three functions in one: filtration, oxygenation and wave making, so you don't need separate equipment for each job.
• Built-in filter sponges and biochemical materials handle the filtration.
• Bottom suction draws water in from the base of the unit, lifts it to the top, then filters it from the top down through the media.
• Dirt is firmly locked into the filter sponge, which helps keep debris from drifting back into the tank.
• Energy saving and designed for low operating noise, which suits living rooms and bedrooms.
• Fully submersible, so the whole unit sits quietly underwater.
• Assembles and disassembles without tools, which makes routine cleaning simpler.

How to Use

Because the filter is fully submersible, it works while sitting underwater in the aquarium. The bottom-suction design pulls water in with enough suction to move it up through the unit before it passes back down through the sponge and biochemical media. Set the direction of the outlet and the strength of the flow to suit your tank layout and the fish you keep. The unit comes apart and goes back together by hand, with no tools required.

Adjusting Flow and Direction

• The water outlet adjusts in four directions: about 120° horizontally and about 30° up and down.
• An adjustable valve controls the strength of the outlet flow.
• Point the outlet to add surface movement for oxygenation, or to create gentle waves in the water.

Suitable For

• Home aquariums that need mechanical and biological filtration with added water movement.
• Aquarists who want a quiet, energy-saving filter that is easy to strip down and clean.

Specifications

• Type: internal, fully submersible aquarium filter
• Functions: filtration, oxygenation and wave making
• Filter media: built-in filter sponges and biochemical materials
• Intake: bottom suction, with water drawn from the bottom to the top and filtered from the top to the bottom
• Outlet angle: about 120° horizontally and about 30° up and down (four-direction adjustment)
• Flow control: adjustable valve
• Assembly: tool-free assembly and disassembly
• Operation: energy saving, low operating sound

Frequently Asked Questions

Can I submerge the whole filter?
Yes. It is fully submersible and designed to run completely underwater inside the aquarium.

How does the water flow through the filter?
It is a bottom-suction filter. Water is drawn in from the bottom, lifted to the top, then filtered from the top down through the sponge and biochemical materials. Dirt is locked into the sponge.

Can I change the direction and strength of the flow?
Yes. The outlet adjusts about 120° horizontally and about 30° up and down, and the adjustable valve sets the flow strength.

Do I need tools to clean or assemble it?
No. The filter assembles and disassembles without tools.

Will it add oxygen and water movement as well as filter?
Yes. It is designed to combine filtration, oxygenation and wave making in a single unit.

How do I choose the right size?
This filter is offered in several sizes. Compare the options in the variant selector and choose the one that suits your aquarium.

When can I expect delivery?

• Gauteng (Jhb/Pta) - 1-3 working days
• Nationwide (Cpt/Dbn+) - 2-5 working days
• Outlying Areas - 3-7 working days

All orders are sent via Economy Road, typically through Fastway or Internet Express Couriers*. Estimated timeframes are not guaranteed. Once the order is collected by the courier, we have no control over third-party logistics and cannot make any time promises.

If you prefer a faster 🚀 shipping option, we also offer The Courier Guy during checkout in the dropdown selection. Please note that this option is not free, and you must choose it to use it. Please pay careful attention to the cutoff times and delivery timeframe for these options during checkout.

Enjoy the convenience of collection points and lockers! 📦

No more waiting at home or at work for your delivery. Simply choose a collection locker or pickup point and collect your order when it suits you.

Delivery times to lockers and pickup locations typically range from 2–7 working days, depending on your location.*

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Collection timeframes:

• Bob Box: Collect within 2 days of receiving your collection notification.
• PUDO Lockers: Collect within 36 hours of receiving your collection PIN or SMS notification.

If a PUDO parcel is not collected within 36 hours, it will automatically be transferred to the nearest PUDO Kiosk or Depot at no additional cost. The parcel will then be held there for approximately 2 days before being returned.

Please ensure you collect your parcel within the applicable collection period. Uncollected parcels will be returned to the sender, and additional shipping charges may apply should the order need to be resent.