Tropical Sponge Filter Cristal

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The Tropical Cristal sponge filter range provides dependable, air-driven internal filtration in five graduated sizes for aquariums up to 100 L. The fine-pore foam delivers mild mechanical filtration while offering ample surface area for beneficial nitrifying bacteria, perfect for shrimp, fry grow-out, quarantine setups, and any tank that needs safe, low-stress water movement.

Tropical Sponge Filter Cristal

gentle intake safe for shrimp and fry
large biological surface area for stable water quality
air-driven (diaphragm/air pump required, not included)
easy maintenance: squeeze the sponge in removed aquarium water
affordable, durable, flexible placement

Model Guide & Tank Sizes:
Cristal Baby: up to ~30 L aquariums
Cristal Mini: up to ~40 L aquariums
Cristal Standard: up to ~60 L aquariums
Cristal Midi: up to ~80 L aquariums
Cristal Maxi: up to ~100 L aquariums

Application & Installation: Connect the filter to an air pump via airline tubing. Rising air lifts water up the riser tube, drawing aquarium water evenly through the sponge where debris is trapped and biological filtration takes place. Adjust airflow for a steady but not excessive bubble stream. Rinse/squeeze the sponge gently in a bucket of aquarium water when flow declines, never under tap water to preserve the biofilm. Replace the sponge if it becomes brittle or loses structure.

Brand:
TROPICAL Tadeusz Ogrodnik

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Accessories for this article:

Tropical Replacement Flter Sponge

1.39 €*
Reviews for Tropical Sponge Filter Cristal:
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What tank sizes are the Tropical Cristal sponge filters designed for?
There are five models: Cristal Baby (up to 30 L), Cristal Mini (up to 40 L), Cristal Standard (up to 60 L), Cristal Midi (up to 80 L), and Cristal Maxi (up to 100 L).
How is the Cristal sponge filter powered?
It is air-driven using a separate diaphragm (air) pump. Rising air creates water movement through the sponge for both mechanical and biological filtration.
Is an air pump included?
No, the required air pump, airline tubing, and check valve must be purchased separately.
Is the filter safe for shrimp and baby fish?
Yes, the fine-pore sponge and gentle suction make it ideal for shrimp, fry, and delicate aquarium inhabitants.
How often should the sponge be cleaned?
Typically every 1-2 weeks, depending on bio-load. Always rinse in aquarium water to preserve beneficial bacteria.
Can the sponge be replaced?
Yes, if it becomes worn or loses structure, it can be replaced with a suitable spare part.
Does the filter need to be fully submerged?
Yes, the filter must be operated completely underwater while the airline is connected to the air pump above the tank.