OASE HEL-X 13 BIOMEDIA 0.3 GAL
The Hel-X 13 BioMedia is a replacement filter media allotment designed for use with the BioMaster 250, 350, 600, or 850 and BioMaster Thermo 250, 350, 600, or 850 models.
This BioMedia allotment provides a large surface area ideal for effective biological filtration in aquarium systems.
Each allotment contains 0.3 gallons of BioMedia.
It is recommended to replace the ceramic filter media only when performing a complete tank restart to avoid disturbing the established biological filter population.
| Specification | Details |
|---|---|
| Product Type | BioMedia Allotment |
| Capacity | 0.3 gallons |
| Compatibility | BioMaster 250, 350, 600, 850 and BioMaster Thermo 250, 350, 600, 850 |
| Use | Biological filtration replacement |
FAQ
Can I use this BioMedia in any BioMaster model?
Yes, it is compatible with BioMaster 250, 350, 600, 850 and BioMaster Thermo 250, 350, 600, or 850 models.
How often should I replace the BioMedia?
Only when performing a complete tank restart to preserve the biological filter load.
Is this product suitable for saltwater tanks?
Please contact customer service




Chloe Clark –
I replaced my old BioMedia with the Hel-X 13 after a tank restart. The surface area is much larger and the filtration has improved noticeably. It fits perfectly in my BioMaster 600 system.
Joe Murray –
Works well with my 350 model. The 0.3 gallon capacity is sufficient for my tank size. I didn’t have to disturb the biological balance during replacement.
Anne Jones –
Easy to install and matches the original media in texture. My water clarity has improved since switching to this BioMedia.