SKU: 94309389451

Maxima Ultra Cultured Clam Tridacna Maxima

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Description

Maxima Ultra Cultured Clam Tridacna MaximaMaxima Ultra Cultured Clam (Tridacna maxima)(Also known as the Small Giant Clam or Ultra Maxima Clam) OverviewThe Maxima Ultra Clam represents the most vibrant and premium colour morph of Tridacna maxima, featuring intense, iridescent mantle patterns in brilliant shades of electric blue, turquoise, green, gold, and violet. Each specimen displays a unique holographic pattern, making it one of the most visually striking clams available in the hobby.

Maxima Ultra Cultured Clam (Tridacna maxima)

(Also known as the Small Giant Clam or Ultra Maxima Clam)

Overview

The Maxima Ultra Clam represents the most vibrant and premium colour morph of Tridacna maxima, featuring intense, iridescent mantle patterns in brilliant shades of electric blue, turquoise, green, gold, and violet. Each specimen displays a unique “holographic” pattern, making it one of the most visually striking clams available in the hobby. Reaching around 20–30 cm (8–12 inches) when fully grown, T. maxima is the smallest of the large Tridacna clams, but among the most sought-after due to its exceptional colour and pattern variation.

Origin

Native to Indo-Pacific reef flats and lagoons, including Fiji, Tonga, Indonesia, and the Great Barrier Reef. Ultraspecimens are typically aquacultured in shallow ocean nurseries, where strong sunlight and nutrient balance enhance their vivid mantle pigmentation. Cultured individuals are more adaptable and sustainable than wild-collected clams.

Lighting

Very high lighting required. The Maxima Ultra depends heavily on symbiotic zooxanthellae for photosynthesis, which fuels both its energy needs and stunning coloration.

  • Use high-intensity LED, T5, or metal halide lighting.
  • PAR range: 300–450 ¬µmol/m¬≤/s for optimal health and colour retention.
  • Place in the upper third of the aquarium or directly on rockwork where light is strongest.

Inadequate light leads to dull coloration, poor growth, and eventual decline.

Water Flow

Low to moderate, indirect flow. The water movement should keep the mantle gently rippling without direct pressure. This helps with gas exchange and nutrient delivery without irritating the clam’s sensitive tissues.

Feeding

Mostly photosynthetic, though smaller or juvenile clams (under 7 cm / 3 inches) benefit from supplemental planktonic foods:

  • Live phytoplankton (essential for juveniles)
  • Concentrated marine microalgae blends
  • Coral/clam filter-feeding supplements (fine particulate size)

Feed 1–2 times weekly in systems with low natural plankton density. Mature clams rely mainly on light and dissolved organics in the water column.

Placement
  • Place on solid, stable rockwork or a clam cradle where the byssal foot can attach securely.
  • Avoid placing directly on coarse substrate or moving it once it attaches.
  • Ensure the mantle is fully exposed to bright, direct light and not shaded by rock or coral.
Tank Mates

Peaceful and fully reef safe. Compatible with:

  • Clownfish, tangs, gobies, wrasses (reef-safe species)
  • Snails, hermits, urchins, and other clean-up crew members
  • Corals that do not produce long sweeper tentacles

Avoid:

  • Angelfish and butterflyfish (may nip mantles)
  • Puffers, triggers, and large predatory wrasses
Aggression

Non-aggressive. The clam poses no threat to other tank inhabitants. Maintain distance from aggressive stony corals to prevent stings to the mantle.

Experience Level

Intermediate to advanced. Cultured Ultra Maxima clams are hardy once settled but demand high-intensity lighting, stable parameters, and pristine water conditions.

Water Parameters
  • Temperature: 25–28°C (77–82°F)
  • pH: 8.1–8.4
  • Salinity: 1.024–1.026 SG
  • Hardness (dKH): 8–12
  • Calcium: 400–450 ppm
  • Magnesium: 1250–1350 ppm
  • Tank Size: Minimum 100 litres (25 gallons) for small individuals; 200+ litres (50+ gallons) for adults

Keep calcium and alkalinity stable for consistent shell growth. Regular water changes, strong lighting, and good flow are key to success.

Reef Compatibility

Fully reef safe. Does not harm corals or invertebrates and thrives in established reef systems. The Ultra Maxima’s vivid mantle provides a spectacular colour focal point and contributes natural filtration through active filter feeding.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 94309389451

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junebugged
Grantham, US
★★★★★ 1
Not the same rubber.
I just received these today. I already have two of the same size direct from the local pet store. The one thing I liked about them that made me want to buy more - my 13lb dog could chew on them all night and never leave a mark. The red one I received was as expected. The blue one I received was not made out of the same rubber. It was softer. We played catch a few times and it didn’t bounce the same. I looked away for 5 minutes and she had it already starting to shred. Not sure what happened but 1 of the 2 balls I was sent was not up to par, possibly defective.
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Reviewed in the United States on May 23, 2024
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Amy L
Natrona Heights, US
★★★★★ 5
Best ball toy I have found
Size: Small
This is my dog’s absolute favorite. I bought this one as a replacement. Finally after years of use one of the tiny ribs gave way. Ball is still completely useable, but got another. She chomps down on it constantly, tears at it, shakes it in her mouth. It is extremely durable. One of the great things about this ball is how ‘soft’ it is. Meaning the way it’s constructed makes it have a lot of give. The texture of the ball itself is firm, but the amount of ‘airiness’ means you can throw it inside your home, against walls, furniture, etc without worrying about any damage. Great toy inside and outside. Highly recommended ball toy. They make all different sizes. My dog is 25 lbs and loves both the 3” and the mini. The mini ones are the same size as mini tennis balls..problem is she would destroy a mini tennis ball within a day of getting one. She has had the mini Hol-ee Roller for years. Super durable.
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Reviewed in the United States on March 18, 2026
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Verified Purchase
LJH
Massapequa, US
★★★★★ 5
I have a toy dog and she really loves this
Size: Small
however her mouth is very small and she had a difficult time gripping the ball. so I took a pair of scissors and cut out a section to make a bigger hole for her to get her little mouth through and now she has a lot of fun picking it up and playing with it. The ball is well-made and is one of her favorite toys. if I tell her to go get her ball she will even go under the bed and is able to grab it and carry it up the stairs to the bed for playtime. It also makes it easy when we are in the yard when I throw it. It is light enough for her to carry and bring back to me. But, as I said , I did have to adapt it so she could get a grip.
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Reviewed in the United States on November 8, 2025
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Lois
Birmingham, US
★★★★★ 5
Holds up great!
Size: Small
Nice ball for puppies!
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Reviewed in the United States on February 16, 2026
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LaVonne
West Palm Beach, US
★★★★★ 4
Easy to grab and throw!
Size: Medium
Our puppy loves this ball, although it gets stuck on her teeth sometimes, but she gets it off just fine! Easy to play and throw. She has a blast catching it, too!
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Reviewed in the United States on August 20, 2024

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