Eheim Substrat Pro Bio-Filter Medium - 5 Litre
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EHEIM SUBSTRAT PRO 5 LITRE FISH TANK EXTERNAL FILTER MEDIA EHFISUBSTRATFree delivery in 1–3 days£104.99Visit shop →
Gallop-Store UKEheim Beige Aquarium Filter Accessories Substrat Pro 5L
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Product Information
Full details
Eheim Substrat Pro is a premium biological filter medium designed for serious aquarium enthusiasts who demand superior water quality. It is ideal for both freshwater and saltwater tanks, offering a vast surface area for beneficial bacteria to thrive and neutralize toxic ammonia and nitrites. While it excels at biological purification, users should note that it is intended as a biological medium and must be used in conjunction with mechanical pre-filters to prevent clogging.
All features
| Brand | Eheim |
|---|
Extended Product Information
FAQs
Can I use this in saltwater aquariums?
Yes, Eheim Substrat Pro is fully compatible with both freshwater and saltwater environments.
How often should I replace the media?
It does not need to be replaced often. You can simply rinse it in aquarium water during maintenance. Only replace a portion of it if the beads become physically degraded or heavily clogged.
Do I need to put it in a mesh bag?
While not strictly required, using a mesh media bag makes it much easier to remove and rinse the substrate during filter maintenance.
Will this affect my water pH?
No, the sintered quartz material is chemically neutral and will not alter the pH or hardness of your aquarium water.
Can I mix this with other filter media?
Yes, it works well alongside other mechanical or chemical media, provided it is placed in a stage where the water has already been cleared of large particulate matter.
Troubleshooting
Nitrite levels remain high after installation
The media requires time for bacterial colonization. Wait 2-4 weeks for the biological cycle to establish or use a bacterial starter additive.
Reduced water flow through the filter
The media may be clogged with debris. Check your mechanical pre-filter and ensure it is cleaned regularly to keep the Substrat Pro clear.
Pros and Cons
Pros
- Maximizes biological filtration capacity
- Effective at neutralizing toxic ammonia and nitrites
- Space-efficient spherical design
- Durable and reusable material
- Suitable for both salt and freshwater setups
Cons
- Requires mechanical pre-filtration to prevent clogs
- Not intended for mechanical filtration purposes
- Heavier than traditional ceramic rings
Setup, Compatibility & Care
When setting up, always rinse the Eheim Substrat Pro with tap water to remove any dust accumulated during shipping before placing it into the mesh media bag or directly into the filter basket. For the best performance, ensure the water passes through a mechanical sponge or filter floss before reaching the Substrat Pro; this protects the porous surface of the quartz from becoming clogged with solid debris. During routine maintenance, replace roughly one-third of the medium every 6 to 12 months if performance drops, or simply rinse the remaining portion in tank water. Never use chlorinated tap water directly on the media, as this will destroy the essential bacteria responsible for your tank's nitrogen cycle.