Achieve ultra-polished water clarity with the Red Sea 100 Micron Felt Fine Polish Filter Sock. Designed for mature aquariums with low particulate matter, this fine-mesh sock captures the smallest suspended particles that coarser socks miss. Ideal for Red Sea Reefer and MAX-S sumps, it also fits any standard 4″/10cm filter bag holder.
Looking for more filtration products? Browse our Filter Media & Cartridges.
Features
- 100 micron fine felt media for polishing water in mature, low-waste aquariums
- Designed for Red Sea Reefer and MAX-S series sumps
- 10.5″/26cm length fits standard 4″/10cm filter bag holders
- Washable and reusable — rinse in warm water and reuse multiple times
- Suitable for both freshwater and saltwater aquariums
Specifications
| Brand | Red Sea |
| Product | 100 Micron Felt Fine Polish Filter Sock |
| Size | 4″ x 10.5″ (10cm x 26cm) |
| Micron Rating | 100 Micron |
| Suitable For | Freshwater & Saltwater |
| Compatible Systems | Red Sea Reefer & MAX-S Series |
| UPC | 730773421954 |
| Condition | New |
FAQ
When should I use a 100 micron sock instead of a 225 micron?
Use the 100 micron sock on mature, established aquariums where particulate levels are already low and you want crystal-clear, polished water. For newer tanks or heavier bioloads, start with a 225 micron sock to avoid frequent clogging.
How often should I clean this filter sock?
Check it every 2–3 days. Because the finer mesh catches smaller particles, it will clog faster than a 225 micron sock. Rinse in warm water to restore flow.
Will this fit non-Red Sea sumps?
Yes, it fits any sump with a standard 4″/10cm filter sock holder. Verify your holder dimensions before purchasing.
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