Half-Moon Aquarium Combo

  • 11535
  • Shop aquariums and tanks, including this great half moon aquarium with LED lighting.
  • 11536
  • 20 Gallon Half Moon Shaped Glass Aquarium
  • 10 Gallon Half Moon Shaped Glass Aquarium
Product No. 4386
Find a Store In Stock

LED Lighting and the unique Half Moon shape of these aquariums make a stunning combination! The LED Light provides a natural shimmering effect in the water, is energy efficient and is powered by a low voltage adapter.

Each aquarium has a clear plastic canopy with a feeding hole, and cut outs for the filter. The canopies also help to reduce water evaporation and keep fish inside the aquarium. 

Half Moon shaped glass aquarium (20 gallon or 30 gallon)
  • 180° seamless views of the aquarium
  • Black plastic framed bottom

Half Moon 20 and 30 include:

  • Half Moon 20 or 30 Aquarium
  • Clear plastic canopy with holder for LED Light
  • LED Light with 42 White and 3 Blue LEDs
  • Daylight LEDs create a shimmering light that mimics the natural underwater effect of sunlight
  • Nightlight LEDs allow for nighttime enjoyment of the aquarium
  • 3-position switch: On, Blue, Off

The Half Moon 20 and 30 Aquariums do not include a filter. The clear covers have been designed with a filter cut out that fit the following filters:

Half Moon 20 - filter cut out dimensions are: 5.906" x 2.638". Recommended filters: Penguin 100 or Tetra EX20

Half Moon 30 - filter cut out dimensions are: 8.500" x 3.500". Recommended filters: Penguin 150 or Tetra EX30


A Half Moon Stand is available for purchase as well.

Half-Moon Aquarium Combo is rated 4.4 out of 5 by 27.
Rated 5 out of 5 by from They are AWESOME! Great Customer service I needed a lid for my 30 gallon half moon they quickly responded to my email and sent me a lid no questions asked and free of charge thanks so much you guys are a great company. At first I thought it was a 20 gallon tank and they sent a lid which was too small. I told them I told them the wrong size and I would buy a 30 gallon lid and they sent one free of charge. Now that is great customer service. I really appreciate their kindness and generosity.
Date published: 2018-03-27
Rated 3 out of 5 by from Removal of tape Just bought our new tank...cannot remove tape residue. Help!
Date published: 2018-01-24
Rated 5 out of 5 by from Great aquarium I purchased this Half Moon 10 gallon tank at a pet store along with a fish and got home only to find the light bar and power supply had been removed from the box. Being the store was 45 minutes away and was now closed, I went ahead and set up the tank. The next morning I called the Care Team (1-800-322-1266) and spoke with Tammy about the missing light and power supply. She was extremely nice and helpful and I am being sent a light/plug. It is refreshing to get great customer service from a company. The tank is beautiful, the internal filter is silent and the flow does not bother my Betta Fish at all. Great product, great company experience and I will definitely buy more Marineland products in the future.
Date published: 2018-01-15
Date published: 2017-10-05
Rated 5 out of 5 by from Replacement Lid Great Customer service I needed a lid for my 30 gallon half moon they quickly responded to my email and sent me a lid no questions asked and free of charge thanks so much you guys are a great company.
Date published: 2017-08-17
Rated 5 out of 5 by from Great customer service and wonderful tank We absolutely love our Half Moon 30 gallon aquarium. It fits in our family room nicely and is not obtrusive. We are so thankful to customer service for helping us with our cracked lid. Would recommend to anyone who would like a larger aquarium that goes nicely with any decor.
Date published: 2017-04-24
Rated 5 out of 5 by from Great customer service They have been nothing but great assisting me with my 30 gallon half moon
Date published: 2017-01-14
Rated 5 out of 5 by from Works Grat as aFOWLR Tank All my friends love this tank so much better than a standard square and it looks way bigger than a 30 gallon because of the half-moon design. The Lid Is so so But everything else is great!
Date published: 2016-09-13
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I have a 30 gallon half moon tank and my plastic canopy has cracked. I have searched all over online to order that piece but I haven’t had any luck. If you would contact me with information regarding where I can order it from, that would be great! Thanks!

Asked by: Kathrynshay
Sorry to hear that happened! Just call 1-800-322-1266. We send them out upon request. BREX
Answered by: BREX
Date published: 2018-06-07

I have an old aquarium like this that I want to sell. I purchased it several years ago and trying to determine if it is 30 or 40 gallon. Can you give me dimensions and what It is currently selling for? Can parts be purchased?

Asked by: Lora
Hello Lora! We only made a 20 gallon and 30 gallon half moon. The dimensions for the 30 gallon are 26-13/16 x 13-29/32 x 26-31/32 inches. You can download the specifications for all of our fish tanks here under product manuals and instructions: http://www.marineland.com/Products/glass-aquariums-and-tanks/standard-rectangular-freshwater-saltwater-aquariums.aspx.
Answered by: Customer Service
Date published: 2018-04-18

Can this be purchased without the stand from a store that carries your line of products?

Asked by: MarkInCincy
Yes, it is sold separately, without a stand. You may need to have a store special order it though. BREX
Answered by: BREX
Date published: 2018-04-09

Hi my name is Joe I have purchased a 30 gallon half moon by Marineland the lid to my tank that was provided has started to crack and I no longer can use it is there anything I can do to replace it any suggestions?

Asked by: Southern Joe
Yes, just call 1-800-322-1266 for a new one. BREX
Answered by: BREX
Date published: 2018-04-02

On the 30 gallon half moon I see dimensions of 26x13x26 is the depth (front to back) the 13 inches. Is that the largest dimension , the middle of the semi circle front?

Asked by: MarkInCincy
Thank you for your question! Yes, the 13" would mark from the middle of the "bow" to the middle of the back of the tank. BREX
Answered by: BREX
Date published: 2018-04-07

How tall is the 30 gallon?

Asked by: Seahorsegirl
26-31/32". BREX
Answered by: BREX
Date published: 2018-03-26

Can I purchase the top to this 30 gallon half moon aquarium? We have this aquarium at work and the top is cracked and we need a new one. I really need to purchase one. Can you help me with this? Thank you.

Asked by: Yovie
Thanks for contacting us Yovie! This lid is not sold separately since it comes only with a complete kit. However, if you call 1-800-322-1266 and tell them BREX told you to call, we'll send one to you under warranty. BREX
Answered by: BREX
Date published: 2018-03-20

what are the exact dimensions of the 20 gallon half and where do they have them in stock

Asked by: mike m
23-15-32 x 12-1/8 x 23-9/16 are the dimensions. Check with your local fish stores. If they don't have it in stock, they can order them. BREX
Answered by: BREX
Date published: 2018-04-08
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11536 - 20 gal 
11535 - 30 gal