Internal Aquarium Undergravel Filters
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$47.35Free shipping- $102.63Free shipping
- Brand New · Penn-Plax$28.84Free shippingOnly 1 left!
- Brand New · Unbranded$53.99Was: $59.99was - US $59.99Free shipping
- $44.42$24.26 shipping49 sold
- $17.99 to $59.99$6.99 shipping5 watching
- $23.99$7.59 shipping
- $15.99Free shipping13 watching
- Brand New · Penn-Plax$19.99$16.65 shippingOnly 1 left!
- $19.39or Best OfferFree shipping41 sold
- Brand New · Unbranded$19.99Free shipping
- $19.99Free shipping32 sold
- $11.99 to $16.99$3.99 shipping
- Brand New · Penn-Plax$39.24Free shipping6 watching
- Pre-Owned · Hagen$19.99$7.99 shipping
- $12.99or Best Offer$7.22 shipping
- $19.99$7.59 shipping
- $12.99Free shipping
- $59.99Free shipping
- Brand New · Penn-Plax$28.34Free shipping7 watching
- $27.99$23.95 shipping5 watching
- Pre-Owned · Penn-Plax$20.99Free shipping
- $34.99Free shipping
- $32.50Free shipping
- $17.27Free shippingOnly 1 left!
- Brand New · Top Fin$25.98Free shipping
- $29.99$9.50 shipping
- Brand New · Unbranded$3.13 to $72.62Was: $78.94was - US $78.94$12.00 shipping
- Brand New · Unbranded$53.33Was: $59.25was - US $59.25Free shipping
- Brand New · Top Fin$24.95or Best Offer$6.53 shipping
- Brand New · Penn-Plax$40.99Free shippingOnly 3 left
- $44.99Free shipping
- $23.95or Best OfferFree shipping4 watching
- $5.00or Best Offer$7.90 shipping
- Brand New · Penn-Plax$11.83Free shipping
- $21.95Free shipping23 watching
- $30.00or Best Offer$6.93 shipping12 watching
- Brand New · Top Fin$19.99or Best Offer$15.67 shipping
- Brand New · Unbranded$53.33Was: $59.26was - US $59.26Free shipping
- $62.77Free shipping
- Brand New · Penn-Plax$32.01Free shippingOnly 1 left!
- $7.40 to $136.40$3.98 shipping
- Brand New · Penn-Plax$39.46Free shipping
- Brand New · Penn-Plax$53.62Free shipping
- $25.97Free shipping
- Brand New · Top Fin$35.00or Best Offer$27.85 shipping
- Brand New · Penn-Plax$28.19Free shipping11 watching
- Brand New · Penn-Plax$42.95Free shipping
- $9.42or Best OfferFree shipping
- Brand New · Penn-Plax$19.99$10.99 shipping
- Brand New · Penn-Plax$47.13Free shipping
- Brand New · Penn-Plax$41.94Free shipping
- Brand New · Unbranded$45.00Was: $89.99was - US $89.99Free shippingOnly 1 left!
- Brand New · Penn-Plax$45.56Free shipping
- Brand New · Penn-Plax$26.99Free shipping
- Brand New · Penn-Plax$29.34Free shipping
- Brand New · Penn-Plax$56.22Free shippingOnly 1 left!
- Brand New · Penn-Plax$30.92Free shipping
- Brand New · Unbranded$35.95Free shipping
- Brand New · Unbranded$33.81Was: $35.97was - US $35.97or Best OfferFree shipping
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- 92% agree - Would recommend$28.49 New
- 87% agree - Would recommend$11.39 New
Review highlights
Recommended by our customersEconomical, easy set-up, little maintenance used with power heads fit into risers.
By cheali1958
I have used these for over 45 years, and have no problems once my tanks are set up. The eco system created with these i... see all reviews
Verified PurchaseLight Weight Filter Fits Perfectly I will be ordering filters in the future thank you!
By lr7li.us.k6jgk04w
Will order again see all reviews
Verified Purchase
