OASE BioPlus 20ppi Coarse Filter Foam Set – Blue
The OASE BioPlus 20ppi Coarse Filter Foam Set is designed for use with OASE BioMaster 250, 350, or 600 aquarium filters. This set includes six coarse replacement filter foams, providing effective pre-filtration to remove larger particles such as fish waste, plant debris, and uneaten food.
Product Features
- Coarse filtration for effective removal of large debris
- Compatible with BioMaster 250, 350, and 600 models
- Set includes six individual foam pieces
- Designed to work in combination with fine filter foams for customized filtration
| Specification | Detail |
|---|---|
| Filter Type | Coarse foam |
| PPI Rating | 20 ppi |
| Set Quantity | 6 pieces |
| Color | Blue |
| Compatibility | BioMaster 250, 350, 600 |
FAQ
How often should I replace the coarse filter foam?
Replacement frequency depends on aquarium size, number of fish, plant density, and filter performance. Monitor flow and cleanliness; replace when the filter becomes less effective or the foam shows significant wear.
Can this foam set be used with other OASE filter models?
This set is specifically designed for OASE BioMaster 250, 350, and 600 models. It is not compatible with other OASE filter systems.
Is the blue color of the foam visible during filtration?
The blue color is part of the design and is visible when the foam is installed. It does not affect filtration performance.

Robert Fisher –
The coarse foam works well to catch large debris before it reaches the fine filter. I noticed less clogging in my 100-liter tank after installing this set. Easy to replace and fits perfectly with my BioMaster 350.
Deirdre Buckland –
Good quality foam that holds up well in a busy tank with fish and live plants. I use it alongside fine foam for layered filtration. It’s a simple upgrade that improves water clarity.
Amelia Mills –
Installed the set in my 600 model and it’s been effective for two months. The blue color is noticeable but not distracting. I appreciate the consistent performance and ease of replacement.