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Thursday 11am - 7pm Friday 11am - 7pm Saturday 11am - 7pm Sunday 11am - 5pm

Fluid Dynamics International

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Deer Park, NY
Fluid Dynamics International

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Long Island's premier custom aquarium builder and retail fish store in Deer Park, NY. Contact us to schedule a private consultation.

With 70+ years of experience, we engineer luxury glass tank designs, professional installations, and elite reef maintenance for residential and commercial clients Fluid Dynamics International is Long Island’s premier provider of luxury custom aquariums, bespoke aquatic habitats, and professional marine maintenance. Based in Deer Park, NY, our expert team designs, builds, and maintains high-end residential and commercial aquariums—ranging from elegant planted freshwater displays to massive custom reef systems. Backed by over 70 years of combined marine biology and architectural expertise, we provide our East End and Tri-State clientele with exclusive access to rare, ethically sourced exotic fish and state-of-the-art life support technology. Whether you are seeking a living piece of art for your home or comprehensive care for an existing system, we deliver uncompromising quality with zero corners cut.

11/10/2026

Fluid Dynamics International is expanding our team! We’re looking for hardworking, detail-oriented and professional team players who take pride in their work and enjoy working with clients.

Previous aquarium service experience is not required. We will train the right candidate. An interest or background in aquariums is a plus, but a strong work ethic and the right attitude are what matter most.

Join an established Long Island aquarium design, installation, and maintenance company servicing residential and commercial clients.

Interested in joining our team? Send your resume to [email protected] or drop it off in person at our Deer Park location.

Have questions? Contact us directly. We’d be happy to hear from you.

11/06/2026

5’ custom aquarium we designed for a pre K- 8th grade school here on Long Island going out! Custom stained stand to match school colors with blue trim euro brace and low iron glass 🔥🔥! This thing has all the bells and whistles including armored seams, extra bottom bracing, concealed water line, etc! This thing is a beast. If you’re looking for a custom aquarium build for your home, office, or commercial space, Fluid Dynamics can walk you through every step of the process to insure your display not only looks amazing, but stays looking amazing!

11/05/2026

We have a great aquarium and terrarium plant selection available in the store this week! We have another fish order and possibly some plants coming in next week. We have a lot going on in and out of the store still and I keep forgetting to post updates, but we should have some big updates soon. Including more details on the constant testing unit we’ve been beta testing!

10/16/2026

This current batch of Apisto Agasizii “Orange Fire” is super nice! These are some of the brightest apistos around with their bright orange, red, and purple coloration. They aren’t available all the time, but when they come in they fly out of here. Currently available in the store.

10/08/2026

More new species in the store this week! Lots of cool stuff arriving today including these Colombian Checkerboard Cichlids Dicrossus maculatus. These rare dwarf cichlids stay relatively small in the 3” range with some males getting larger and more elongated. They’re peaceful and can be shy when first introduced to your display. Lots of great schooling fish are back in stock including Jumbo Wild Cardinals and the best looking Wild Rummynose Tetras you’re going to find anywhere. Blue Banded Severums are finally back in stock too!

09/23/2026

First time ever seeing these available! We have a few really nice Electric Blue Black Rams in this weeks order. The Electric Blues are getting better looking by the day. We also received a super nice batch of Red Neon Blue Eyes at a great price. They’re also coloring up nicely in our store system. These will not last long, they might even be gone by the weekend.

09/07/2026

Humming Bird Tetras available in the store! We also received a batch of Sundadanio axelrodi “Red” variant. We’ve had the axelrodi “Blue” available a few times and they color up into really impressive fish. The Humming Bird Tetras are way better looking in person and even have an iridescent stripe along the inside of their rib cage that’s highly reflective giving them a bright pink stripe in our store tank. The bright yellow on their back is already coming in and their bright red tails make for a really cool display fish for a species that’s almost entirely clear. These were a special order for a client and we ordered some extra for our regular store customers. These do not come around often and we have limited numbers.

09/02/2026

This week’s livestock order arrives Thursday, and we’ll have another great selection of freshwater fish available, including these beautiful Trochilocharax ornatus, also known as Hummingbird Tetras.

We also have more live aquarium plants on the way, with several popular varieties back in stock. If you’re setting up a new planted aquarium, adding to an existing community tank, or just looking for something new, there should be plenty to choose from.

https://fluiddynamicsinternational.com

08/29/2026

We’re constantly asked “what are the ideal plant tank parameters” or helping customers address issues “why are my plants not growing or doing well”. Most of the time it’s gaps in basic nutrients that are easily addressable. The main nitrate, phosphate, and potassium levels are the three macro nutrients you need to get under control first. If you aren’t using quality fertilizers or aqua soil it’s going to be a lot harder to maintain healthy plants because you’re just starving them. Your home planted tank display should remain fairly stable as far as nutrient demand, so getting on a regular dosing schedule that covers most of your plant’s needs is easy. In most cases, one or two bottles of fertilizers is enough to cover your needs and keep your plants thriving.

The grid image of all the necessary parameters to keep track of is in order of importance from top left to bottom right. Feel free to keep these as a reference.

CO2 gas is naturally present in solution in your aquarium water. CO2 injection is just boosting the available CO2 for plant respiration giving them more of what they need. Some advanced plants do require added CO2 injection, but for a lot of the easier plants it’s just an added benefit if you decide to take that step.

https://fluiddynamicsinternational.com

08/27/2026

We got a few questions about Eriocaulon buergerianum from our last post. This is one of the plants we’ll be growing out as an aquarium plant and for terrariums (it’s doing great in both for us). Like the Eriocaulon vietnam that we have available this one is also a dense carpeting plant if you let it grow in and replant clippings. While the vietnam is super easy and fast growing, the buergerianum is slower and more demanding in aquarium applications.

I really wouldn’t label it a slow grower since we’re getting decent growth everywhere we’ve put it after it settled in from tissue culture clippings. As a foreground to midground plant for aquariums it looks different from your usual grass like plants with tighter tufted rosettes of smaller compact leaves. Once it’s settled it roots pretty quickly and starts growing. We’re looking forward to seeing this grown out as a carpeting plant and an accent in some terrarium displays.

https://fluiddynamicsinternational.com

Address

832 Grand Boulevard
Deer Park, NY
11729

Opening Hours

Thursday	11am - 7pm
Friday	11am - 7pm
Saturday	11am - 7pm
Sunday	11am - 5pm

Telephone

+16312085302

Website

http://www.fluiddynamicsinternational.com/

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