
- Tetra 26311 Whisper EX 30 Filter, 20-30-Gallon
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Amazon
From $20.69 (New)
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Petsmart
From $26.99 (New)

From $20.69 (New)
From $26.99 (New)

| Last Seen | |
| Highest | $24.64 Apr 8, '15 |
| Lowest | $14.49 Sep 29, '14 |
| Average | $20.46 (30d avg) $21.98 (90d avg) $21.08 (180d avg) $21.39 (365d avg) $19.95 (Lifetime average) |
| Added | Sep 16, 2013 |
| Latest | $16.06 1 day ago |
| Highest | $22.94 Dec 29, '13 |
| Lowest | $10.00 Nov 14, '14 |
| Average | $16.63 (30d avg) $17.08 (90d avg) $16.57 (180d avg) $16.42 (365d avg) $17.10 (Lifetime average) |
| Added | Sep 16, 2013 |
| Latest | $12.00 1 day ago |
| Highest | $21.45 Apr 6, '15 |
| Lowest | $10.00 Jun 2, '14 |
| Average | $12.00 (30d avg) $12.19 (90d avg) $13.44 (180d avg) $14.72 (365d avg) $15.08 (Lifetime average) |
| Added | Sep 16, 2013 |
30 day average: 13,239
90 day average: 14,799
Whisper EX 30 filter

| Latest | $26.99 9 hrs ago |
| Highest | $26.99 Apr 5, '16 |
| Lowest | $22.94 Jan 29, '16 |
| Average | $24.61 (30d avg) $24.51 (90d avg) $25.75 (180d avg) $26.38 (365d avg) $26.28 (Lifetime average) |
| Added | Mar 25, 2014 |
Scientifically designed to make your life easier and the health and clarity of your aquarium better. Now that's technological advancement! The Tetra EX series is intuitive. You've made it clear that you don't want to think about the filtration system. You just want it to be easy to assemble and use. So now they're plug-and-go and the Timestrip change indicator was relocated for easier changing and viewing. The traditional filter system will soon be antiquated because this filter cartridge has been re-thought and re-designed to look better, be more effective by altering water flow, and easier and faster to clean and change. New patent-pending technology available in the EX series. Continuous system tank flush Quick-drain carbon filter design (rounded bottom) Carbon filter carrier quick-drain Carbon filter carrier anti-drip Carbon filter point-and-drop Carbon filter change indicator (Timestrip) Stay in place/no-drip carbon filter access door Multi-stage/frameless carbon