Deal Alerts
Post a Deal
Giveaways
Sign Up / Log In

Categories
Coupons
Community Forums
Personal Finance

Trending
Top Retail Deals
Tool Deals
Tech Deals
Shopping Advice
Apparel
Credit Card Offers
Laptops & Computers
Home Deals
Sneaker Deals
Grocery Deals

Slickdeals is community-supported. We may get paid by brands for deals, including promoted items.

Fluval U3 Underwater Filter – Designed for Freshwater and Saltwater Aquariums - $21.59 FS w/prime

$22$3638% off

Help the community know if this is a good deal.

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Get Deal at Amazon

Slickdeals
Forums
Hot Deals

Item 1 of 3

Item 1 of 3

popularfoxfai posted Nov 30, 2025 4:33 AM

Fluval U3 Underwater Filter – Designed for Freshwater and Saltwater Aquariums - $21.59 FS w/prime

$22

$36

38% off

Amazon

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

2.8K Views

Get Deal at Amazon

Deal Details

https://www.amazon.com/Fluval-A47...=UTF8&th=1

Community Notes

This collaborative space allows users to contribute additional information, tips, and insights to enhance the original deal post. Feel free to share your knowledge and help fellow shoppers make informed decisions.

About the Poster

foxfai Joined in Aug 2008

3,498Reputation Points

1,250Votes Submitted

684Deals Posted

5,125Comments Posted

Deal Details

Community Notes

About the Poster

https://www.amazon.com/Fluval-A47...=UTF8&th=1

Community Voting

Deal Score

+11

Good Deal

Bad Deal

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Get Deal at Amazon

Join The Conversation

Share information with the community. Please follow our Community Guidelines and be kind!

2 Comments

Sign up for a Slickdeals account to remove this ad.

rcillig

Nov 30, 2025 11:55 PM

104 Posts

Joined Jun 2017

rcilligNov 30, 2025 11:55 PM

104 Posts

great filter.... great deal!

Like

Helpful

Funny

Not helpful

ruouttaurmind

Dec 5, 2025 2:08 PM

1,366 Posts

Joined Mar 2018

ruouttaurmindDec 5, 2025 2:08 PM

1,366 Posts

It's freakin' enormous compared to my RES turtle's current Zilla filter. Maybe it'll last longer than a week between cleanings. I guess at this discounted price it's worth a shot.

Like

Helpful

Funny

Not helpful

Join The Conversation

Share information with the community. Please follow our Community Guidelines and be kind!

Related Searches

Occasions Black Friday Cyber Monday Pets Pet Care & Supplies Fluval Amazon

Popular Deals

Found by wileysmiley

Yesterday 5:20 AM

Forum Thread

adidas women's adizero adios pro 4 shoes (2 colors) - from $89.40 $89$250

64% off

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Found by neomatrixviper

Jul 11, 2026 4:25 PM

Forum Thread

Fanflix Horrific Hits 2 or More starting @ $4.99

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Found by iconian

Today 3:47 AM

Forum Thread

100-ft addlon Waterproof LED Outdoor String Lights with Remote $16.70 @ Amazon $17$30

43% off

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Found by Taco_Doomsday

Today 1:07 AM

Forum Thread

Bora 40in Parallel Clamp Set, 2 Pack of Woodworking Clamps 571140T $69.99 $70$155

54% off

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Found by jk6812

Today 2:22 AM

Forum Thread

Razer Deathadder Essential 6400 DPI Optical Gaming Mouse (Renewed) $16.02 + Free Shipping w/ Prime or on $35+$16$25

36% off

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Trending Deals

Found by kenmikec

Yesterday 5:47 AM

Forum Thread

Walmart+ Membership Offer w High Cash Back YMMV $1 $1.00

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Found by daisybeetle

Today 3:34 AM

Forum Thread

Columbia Men's Burnsider Omni-Heat Infinity Men's Insulated Waterproof Snow Boots $38.83 + Free Shipping on $60 $39$130

70% off

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Found by dRinksurgE1975

Yesterday 10:18 PM

Forum Thread

LG Partner Store: 77 Inch Class LG OLED evo AI C5 4K Smart TV + S40TY Soundbar $1619.99 $1,620$3,900

58% off

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Found by SUCHaDEAL

Today 12:50 AM

Forum Thread

$10 FS WALMART+ in choice of colors: Sold by Cowin: Sun Hat for Men Sun Protection Wide Brim Bucket Hat Waterproof Breathable

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Found by spike32

Today 4:15 AM

Forum Thread

CVS pickup Colgate Toothpaste buy 2 for $$5 and get $4 in rewards; buy 2 for $6 and get $5 in rewards

You have chosen to downvote this deal.

Not a good price
Not a good product
Poor Merchant Reputation
Unable to replicate deal
Incorrect Information
Spam, Self Promotion
Repost
Other

Popular Deals See All

adidas women's adizero adios pro 4 shoes (2 colors) - from $89.40
$89$25064% off
+5
0
Fanflix Horrific Hits 2 or More starting @ $4.99
+5
0
100-ft addlon Waterproof LED Outdoor String Lights with Remote $16.70 @ Amazon
$17$3043% off
+5
1
Bora 40in Parallel Clamp Set, 2 Pack of Woodworking Clamps 571140T $69.99
$70$15554% off
+5
1
Razer Deathadder Essential 6400 DPI Optical Gaming Mouse (Renewed) $16.02 + Free Shipping w/ Prime or on $35+
$16$2536% off
+5
1

Trending Deals See All

Walmart+ Membership Offer w High Cash Back YMMV $1
$1.00
+4
32
Columbia Men's Burnsider Omni-Heat Infinity Men's Insulated Waterproof Snow Boots $38.83 + Free Shipping on $60
$39$13070% off
+5
2
LG Partner Store: 77 Inch Class LG OLED evo AI C5 4K Smart TV + S40TY Soundbar $1619.99
$1,620$3,90058% off
+5
6
$10 FS WALMART+ in choice of colors: Sold by Cowin: Sun Hat for Men Sun Protection Wide Brim Bucket Hat Waterproof Breathable
+5
2
CVS pickup Colgate Toothpaste buy 2 for $$5 and get $4 in rewards; buy 2 for $6 and get $5 in rewards
+5
1

Follow Us

Twitter
Facebook
Instagram
YouTube

About

About Us
Help Center
Advertising Opportunities
Careers
Contact Us

More

Slickdeals Coupons
Deal Alerts
Slickdeals Live
Black Friday Deals 2026
Slickdeals Cashback Rewards

Legal

Privacy Policy
Other Terms and Policies
Interest-Based Ads
State Privacy Rights
Website Accessibility

Copyright 1999 - 2026. Slickdeals, LLC. All Rights Reserved.