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Showing 313 - 336 of 450 products

Ultum Nature Systems (UNS) 120P Standard 78 Gallon Lid

$339

Ultum Nature Systems (UNS) 120S Shallow 68 Gallon Lid

$389

Ultum Nature Systems (UNS) 120U Standard 114 Gallon Lid

$389

Ultum Nature Systems (UNS) 150U Standard 141 Gallon Lid

$469

Ultum Nature Systems (UNS) 150U Standard 142.5 Gallon Lid

$469

Ultum Nature Systems (UNS) 16C Cube 1 Gallon Lid

$59

Ultum Nature Systems (UNS) 16T Tall 1.5 Gallon Lid

$59

Ultum Nature Systems (UNS) 180U Standard 156 Gallon Lid

$549

Ultum Nature Systems (UNS) 18C Cube 1 Gallon Lid

$59

Ultum Nature Systems (UNS) 20C Cube 2 Gallon Lid

$69

Ultum Nature Systems (UNS) 25C Cube 4 Gallon Lid

$79

Ultum Nature Systems (UNS) 25S Shallow 2 Gallon Lid

$79

Ultum Nature Systems (UNS) 25T Tall 5.5 Gallon Lid

$79

Ultum Nature Systems (UNS) 30A 7 Gallon (Black Filter Wall) Dual All-In-One (AIO) Lid

$79

Ultum Nature Systems (UNS) 30A 7 Gallon (White Filter Wall) Dual All-In-One (AIO) Lid

$79

Ultum Nature Systems (UNS) 30C Cube 7 Gallon Lid

$89

Ultum Nature Systems (UNS) 35A 11 Gallon (Black Filter Wall) Dual All-In-One (AIO) Lid

$89

Ultum Nature Systems (UNS) 3N Nano 3 Gallon Lid

$79

Ultum Nature Systems (UNS) 3T Tall 3.4 Gallon Lid

$79

Ultum Nature Systems (UNS) 40A 16 Gallon (Black Filter Wall) Dual All-In-One (AIO) Lid

$109

Ultum Nature Systems (UNS) 40C Cube 16 Gallon Lid

$129

Ultum Nature Systems (UNS) 45A (Black Filter Wall) Dual All-In-One (AIO) 9 Gallon Lid

$99

Ultum Nature Systems (UNS) 45A All-In-One (AIO) (Non-Dual AIO) 9 Gallon (Black Filter Wall) Lid

$99

Ultum Nature Systems (UNS) 45C Cube 22.8 Gallon Lid

$149

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Let customers speak for us

from 418 reviews

Don’t wait!

I’e wanted a Kraken lid since I’ve seen them , but kept waiting till my other (bad quality) cover went out. I don’t know what I was waiting for. These are everything people say they are and bring any tank to the next level. Shoulda jumped sooner. I love it.

Stevesteve

09/23/2026

Shipped fast fit perfect fifth lid I have purchased

Shipped fast fit perfect fifth lid I have purchased.

Navygatorgrads

The lid looks even better than I expected

The lid fits perfectly and looks even better than I expected. The quality and fit are excellent, and it really gives the tank a clean, polished look. I’m very happy with it. Thanks so much!

Manuel

09/20/2026

Fits perfectly and the quality is fantastic!

Fits perfectly and the quality is fantastic! A+ from ordering to receiving the lid. Very happy!

Matthew Andrade

09/19/2026

Just received it and very good product

Just received it and very good product. Thank you

Saul

09/18/2026

Waterbox 25 lid

I love the lid I received ! I requested a cutout for my powerhead cord and it’s in the perfect location. The lid fits perfectly and makes the tank look great !

AbelD02

09/16/2026

Fantastic Lid

It took just under 4 weeks from ordering my lid to having it.. The 6' lid for my Waterbox 220.6 fit perfectly with all the cutouts for the lights etc bring perfect. No adjustments were needed. The 3 piece construction is solid and should last for years. For me the feeding portals could be a bit larger, but that's just because I have large hands. The lid is well worth the cost.

Pbchef

09/10/2026

After sharing a couple of pics and some measurements where my light needed to go

After sharing a couple of pics and some measurements where my light needed to go, they were able to make exactly what I asked for. Fits perfectly on my tank. Could t be more pleased with the process or the final product. Highly recommend not only the lid but all the support and guidance.

RLord

Nice quality!

Jermaine

09/08/2026

Don't Skimp on the Lid — A Custom Solution Worth the Investment

I recently ordered a custom Kraken Reef lid for my UNS 30C, and it is worth every penny. The build is made of sturdy, premium acrylic and feels noticeably thicker and higher quality than the stock glass lids UNS produces.

Functionally, it checks every box: the flush fit securely keeps livestock inside, provides excellent breathability for proper gas exchange and floating plants, and keeps stray floating dog hair out of the water column. The ordering process was simple, and the customization ensured it fit my exact setup seamlessly.

While the price tag is higher than off-the-shelf alternatives, the quality completely justifies the cost. You aren’t paying for a generic stock lid—you’re getting a high-end, tailored component. Given how much time and money we invest in livestock, equipment, and aquascaping, it makes no sense to skimp on the cover. Finish your setup strong—your aquarium is only as strong as its weakest part!

John

09/03/2026

Great top for my Hello Reef 15 Gallon Tank

I was led to Kraken tops by my brother, who has purchased their aquarium tops in the past. I had a question about adapting an automatic feeder to the top prior to my decision to place the order and I believe they replied to me in less than 10 minutes, leading me to place my order very shortly thereafter. And my top came more quickly than the quoted time on the order. The quality is terrific, it fits perfectly, and looks great. They are not a cheap top but well worth the money!

JTE

09/02/2026

My new lid looks great and fits perfectly

My new lid looks great and fits perfectly.I'm so glad I made this purchase

Jgt

Superb Quality

Superb Quality, Outstanding service

It was a big investment for my JBJ RF-65 gallon tank and out of my budget but the value created far exceeded the dollar spent.
At first, I thought what’s the difference between this lid and the 20 dollar magnetic lid off amazon, but when I researched and it arrived I was very surprised and happy with the difference and glad I made the choice. The lid is THICK but not heavy, the mesh is thoughtfully attached, and the fitting works perfect.

I also found out my tank had a factory issue where the back chamber of the AIO was being warped by the force of water. I reached out to customer service, and after they inspected the photo and videos I sent them, they offered to create a custom offset for the AIO. They designed it and shipped it to me on their dime and the fit is perfect even though they only looked at pictures to estimate the offset.

v/r if you’re reading this I really appreciate your help. It’s perfect! :)

I hope these guys are still around when I upgrade my tank to a 180 gallon.

R Bucci

great and easy

great and easy.

Lily

08/31/2026

absolute must

This is the perfect lid for my tiny tank. Well made, fit perfectly and the space for the cords are at the exact space they should be.

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Let customers speak for us