Aquariums Fresh & Saltwater
Water Features
Water FeaturesPonds, Waterfalls, Fountains
Fish, Plants & Supplies
Fish, Plants & SuppliesCorals & More
MaintenanceAquarium & Pond

Algae Control

The biggest complaint from Pond owners is undoubtedly Algae Control. When you begin to understand the causes of algae – dealing with this nuisance isn’t so daunting.

LED Lighting

Let’s Face it . .Most of us don’t get to enjoy our Ponds as much as we’d like during the daylight hours. We spend all of our time making the money to afford our properties, and only enjoy them at night or on the weekends.

LiveWall System

Is a hybrid of architectural design, engineering, and horticulture—bringing together the best of aesthetics, physical and functional attributes, and a biological environment for plant material to thrive.

Rain Collection

Water is quickly becoming an endangered species on our blue planet. Urban growth increases storm water runoff, which in turn harms natural waterways. All life requires water for survival.


The Fish Guy is an Aquarium & Water Feature Maintenance and Installation Company based out of Farmingdale, Long Island, NY.

We create Custom Designed Aquariums, Ponds & Waterfalls on Long Island, NY. Our expertise in Aquariums ranges from Live Planted tanks to living Reef Aquariums.  Our love for fish carried over into Ponds, and we love building & maintaining Ponds & Waterfalls – applying our knowledge of Fish keeping – Outdoors! Routine Maintenance is available: Weekly, Bi-monthly or Monthly, for Ponds & Aquariums. Call Us Today – (516) 937 – 3474. Visit our Online Store: for all your Water Feature Supply Needs.  

Servicing: Nassau and Suffolk County, NY.  Including; Bayville, Glen Cove, Oyster Bay, Oyster Bay Cove, Laurel Hollow,  Syosset, Muttontown, East Norwich, Roslyn, Roslyn Harbor, Hewlett, Lawrence, Woodmere, Rockville Centre, East Rockaway, Great Neck, Plandome, Port Washington, Manhasset, Garden City, Mineola, New Hyde Park, Floral Park, Cold Spring Harbor, Brookville,  Jericho, Woodbury, Westbury, Plainview, Bethpage, Hicksville, Farmingdale, Bellmore, Merrick, East Meadow, Levittown, Seaford, Wantagh, Long Beach, Oceanside, Amityville, Babylon, Bellport, West Babylon, Huntington, Huntington Bay, Dix Hills, Hauppauge, Head of the Harbor, Lake Grove, Lloyd Harbor, Melville, Northport, East Northport, Kings Park, Commack, West Islip, East Islip, Islandia, Holbrook, Oakdale, Sayville, Ronkonkoma, Patchogue, Smithtown, Nesconset, St. James, Setauket, East Setauket, 

  • Is your Pond or Waterfall Losing Water?
    Tips on Leak Detection . . .

  • 1Are you losing water at a Slow or Fast Rate?  Measure how much water you lose in a 24-hr Period.

  • 2Try to Isolate where you are losing water from…  Do you still lose water when your pump(s) are shut off?
  • 3Make sure you have adequate Aeration while conducting these tests. Especially during the summer months…