Goldfish Aquarium Filter U-Very Suitable for 20-75 Gallon Tank, 30 Gallon Fish Tank Water Filter for Green Water Control, Internal Submersible Pump Filtration System, Fish Filters for Aquariums
Original price was: $39.99.$36.99Current price is: $36.99.





Price: $39.99 - $36.99
(as of Nov 09, 2025 09:55:30 UTC – Details)
From the brand


“Expert Care for Your Pets”
For nearly two decades, Coospider has been the trusted leader in aquarium filtration innovation. Born from a marine biologist’s passion for healthy aquatic ecosystems, our brand combines cutting-edge engineering with real-world aquariumkeeping insights to solve problems other filters leave behind.
We focus on what truly matters: crystal-clear water stability, whisper-quiet operation, and equipment that outlasts your aquarium setup.
Aquarium Filter
Aquarium Filter & Pump
Package Dimensions : 11.34 x 4.29 x 3.19 inches; 1.64 Pounds
Item model number : H6F
Date First Available : November 26, 2024
Manufacturer : COOSPIDER
ASIN : B0DP292N77
Best Sellers Rank: #20,514 in Pet Supplies (See Top 100 in Pet Supplies) #78 in Aquarium Filters
Customer Reviews: 4.2 4.2 out of 5 stars 138 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Quickly Remove Green Problems: We have integrated a more powerful light that will help you solve the green water problem within 1-3 days, especially suitable for 20/30/40/55/75 gallon aquariums. This is really amazing!
Expensive Pure Copper Durable Motor: Our motor has been rigorously tested for extended dry-run conditions, to ensure it can withstand overheating without damage. By utilizing a pure copper motor and optimizing the cross-sectional area of the copper wire, we have significantly reduced the operating temperature. This means the motor can now run continuously for extended periods without the risk of damage, ensuring your fish remain vibrant.
No More Water Leaks!!! If you abandon the canister filter on the floor or space-consuming hang-on-back filters, you will find that this internal filter is perfect for indoor use. The filter has a built-in sponge, which gives our filter performance comparable to any other filter. At the same time, you no longer have to worry about water leaking out or even causing significant damage.
Why Choose Us? Our engineers have done an excellent job in motor quality control. Every single one of our products must pass a power-on test without any issues before being shipped. Our products come with a warranty period of up to six months. Feel free to use it; if it breaks, we will directly replace it for free (though we are confident this is unlikely to happen).
Since 2017, our brand has been dedicated to in-depth research and development of this product. Over the past 8 years, we have continuously refined and improved it, leading to its widespread acceptance by customers today. We are confident that our extensive experience allows us to provide you with superior service. Should you have any questions or concerns, please do not hesitate to contact us. We are committed to resolving any issues promptly and to your satisfaction.
Customers say
Customers find the aquarium filter effective, particularly for turtle tanks, and appreciate its ability to clear water and manage algae. The filter is easy to clean, virtually noiseless, and offers good value for money. However, durability receives mixed feedback, with one customer reporting premature bulb failure.
8 reviews for Goldfish Aquarium Filter U-Very Suitable for 20-75 Gallon Tank, 30 Gallon Fish Tank Water Filter for Green Water Control, Internal Submersible Pump Filtration System, Fish Filters for Aquariums
Add a review
Original price was: $39.99.$36.99Current price is: $36.99.
Sara Williams –
Works
Due to a storm electric went out causing old pump to stop working we used an emergency battery operated bubbler untill electric was restored and rushed to Walmart to get an emergency pump but they only had one for 5 gallon tank my tank started to get cloudy and and my fish wasnât really happy I purchased this and less then 24 hrs tank was clear and fish were swimming and acting normal within 2 days I will be purchasing a second one for for emergencies it is working great
Susan Rushing –
Arrived alive, healthy and vibrant
I was nervous about buying live creatures on Amazon. However, everyone arrived safely and well packed. The shrimps and snails were heathy and acclimated to my tank quickly. I will order from this seller again.
Jill Granville –
Buy this today
Incredible product! This crystal cleaned my 30 gallon tank in 24 hours! I removed it, washed it out, and put in directly in my second tank for 24 hours. Iâm happy, my fish are happy!
joseph malek –
â ï¸ DO NOT BUY â ï¸ This death trap fried 5 of my prize fish in minutes. Absolute garbage. RUN!!!
â ï¸ DO NOT BUY â ï¸ This death trap fried 5 of my prize fish in minutes. Absolute garbage. Shouldnât even be sold. RUN!!!This isnât a filter, itâs a fish killer. Burned out instantly and wiped out hundreds of dollars of livestock. Pure junk.If you value your fish, your tank, or your sanity â stay far, FAR away. This thing is a cheap ticking time bomb.Worst purchase ever. Straight out of the box it malfunctioned, cooked my fish, and left me furious. Should come with a warning label: Destroys tanks, kills pets, empties wallets.Trash. Dangerous. Deadly. My fish paid the price â donât let yours.
ajw23 –
Works Well but Flow Too Powerful
It works well but like other reviews said, the flow is way too powerful for any tank. If there was a diffuser it came with or you could buy to lessen that flow, it would be fine but without that, this just isnât practical for any size tank. But the UV filtration seems to work well. I had a bacterial infection in my 75 that has seemed to stop killing fish now that Iâve added this sterilizer. I just adding tubing to the flow output to redirect that flow a bit so now it blows my gravel around instead of the fish. Not attractive or ideal but since it has solved the illness in my tank I am putting up with it.
steve sheehan –
Great Filter
this filter cleared up our 30 gallon tank in 3 days now it looks great!
Diana Guss –
Great buy
Great buy
Rayne –
I Can See My Baby Again!
I love this thing! And so does my little slider Charlie! I got so tired of constantly having to purchase more replacements for my last filter, I decided to try this route.Itâs virtually noiseless! Iâm not having to clean the tank as often. Before, I was replacing the water every 3-4 weeks. Now, I can go about 5-6 weeks, and even when I clean the tank, the water isnât as dirty and doesnât have that God awful stank to it!Charlie loves the bubbles from the air hose! Heâs constantly swimming against the bubbles and slapping his little arms in the water! I do have my husband take it out and rinse it (to get the pellets that are stuck to the side) about 1-2 times a week. Itâs so easy!I donât ever see myself going back to the old style filters! This makes the water so much clearer than the other ones ever did! Highly recommend going this route for whatever water pet you may have!