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API Products

Best Seller

API Pond AlgaeFix Controls Algae Growth and Works Fast

$11.48 - $139.98
  • $275.99
  • Save $145 (53%)
4.8 (76)
Clearance

API Stress Coat + Fish and Tap Water Conditioner

$2.28 - $259.98
  • $199.99
  • Save $105 (53%)
4.8 (30)
Best Seller

API Filstar XP Filtration Pads

$11.98 - $57.46
  • $114.99
  • Save $58 (50%)
4.9 (10)
Best Seller

API Pond Zyme Sludge Destroyer Consumes Pond Sludge

$19.98 - $60.76
  • $121.99
  • Save $61 (50%)
4.9 (8)
Best Seller

API Stress Zyme Plus Bio Filtration Booster

$2.48 - $113.00
  • $237.99
  • Save $125 (53%)
5.0 (10)
Best Seller

API Pond Stress Coat Water Conditioner

$14.99 - $140.00
  • $294.99
  • Save $155 (53%)
4.9 (11)
Best Seller

API Filstar XP Micro Filtration Pads

$8.28 - $40.48
  • $80.99
  • Save $41 (50%)
4.8 (13)
Best Seller

API Pond Accu-Clear Quickly Clears Pond Water

$16.39 - $125.00
  • $183.99
  • Save $97 (53%)
4.8 (18)
Best Seller

API E.M. Erythromycin Treats Bacterial Fish Disease

$17.48 - $417.00
  • $875.99
  • Save $459 (52%)
4.7 (3)
Best Seller

API Super Activated Carbon Size 6

$8.48 - $39.50
  • $79.99
  • Save $41 (51%)
4.8 (9)
Best Seller

API Nitra-Zorb Removes Aquarium Toxins Size 6

$16.98 - $51.07
  • $102.99
  • Save $52 (50%)
5.0 (4)
Best Seller

API Freshwater Master Test Kit

$35.98 - $68.36
  • $143.99
  • Save $76 (53%)
4.8 (44)
Best Seller

API Filstar XP Super Microfiltration Pads

$9.98 - $47.20
  • $94.99
  • Save $48 (50%)
4.9 (11)
Best Seller

API Pond Pond Salt Natural Fish Tonic for Ponds

$12.79 - $90.36
  • $189.99
  • Save $100 (52%)
4.5 (4)

API Safe and Easy Aquarium Cleaner

$7.98
  • $14.99
  • Save $7 (47%)
5.0 (3)
Best Seller

API Quick Start Water Conditioner

$2.78 - $71.21
  • $149.99
  • Save $79 (53%)
5.0 (1)
Best Seller

API Pond Ecofix Sludge Destroyer Consumes Pond Sludge

$16.98 - $146.00
  • $214.99
  • Save $113 (53%)
4.5 (12)
Best Seller

API Accu-Clear Clears Cloudy Aquarium Water

$3.48 - $31.24
  • $59.99
  • Save $29 (48%)
5.0 (3)

API pH Test Kit for Freshwater Aquariums

$7.98 - $22.74
  • $43.99
  • Save $21 (48%)

API Pond Aquatic Plant Food Tablets

$7.48
  • $13.99
  • Save $7 (47%)
4.0 (2)

API Leaf Zone Promotes Aquarium Plant Growth

$7.98 - $32.35
  • $61.99
  • Save $30 (48%)
5.0 (1)

API Doc Wellfishs Hand Held Algae Pad for Glass Aquariums

$3.98 - $41.79
  • $83.99
  • Save $42 (50%)
5.0 (2)
Best Seller

API Ammonia NH3/NH4+ Test Kit

$15.48
  • $27.99
  • Save $13 (45%)
5.0 (2)

API Marine Stress Coat Makes Tap Water Safe

$13.98 - $38.79
  • $77.99
  • Save $39 (50%)
5.0 (1)

API Turtle Fix Treats Bacterial Infections

$5.48 - $31.24
  • $59.99
  • Save $29 (48%)

API Ammo Lock Detoxifies Aquarium Ammonia

$6.98 - $78.89
  • $165.99
  • Save $87 (52%)
5.0 (1)

API pH Down Lowers Aquarium pH for Freshwater Aquariums

$5.78 - $48.42
  • $96.99
  • Save $49 (50%)
5.0 (1)

API Tropical Flakes Fish Food

$2.98 - $23.55
  • $5.99
  • Save $3 (50%)
5.0 (1)

API Pond pH Down Lowers Pod Water pH Safe for Fish and Plants

$16.60 - $47.32
  • $94.99
  • Save $48 (50%)
4.5 (2)
Best Seller

API Ammo Lock Ammonia Detoxifier for Ponds

$15.68 - $96.86
  • $203.99
  • Save $107 (53%)
5.0 (1)

API Root Tabs Plus Iron Promotes Lush Growth of Aquarium Plants

$9.98 - $55.39
  • $110.99
  • Save $56 (50%)
5.0 (1)

API Pond Wide Range pH Test Kit Reads pH 5.0 to 9.0

$9.48 - $26.31
  • $49.99
  • Save $24 (47%)
Best Seller

API Algae Scraper for Acrylic Aquariums

$8.98 - $34.12
  • $64.99
  • Save $31 (47%)

API Water Chemical Products

As leaders in the ornamental fish industry since the early 1960s, they are very vigilant about superior product quality and taking care of their aquarium and fish enthusiast customers. They make a wide range of pet products including Stress Coat, Stress Zyme, Melafix and many others. If you are serious about fish and ensuring your aquarium is perfectly suited for them, then you know how important medications, algae control, water treatment and filters are to the health of your fish. The great thing about Aquarium Pharmaceuticals is that they are focused intently on research and development, always attempting to make their products better, more efficient, and less expensive. They even have 150 experimental aquariums and ponds in their state-of-the-art research laboratory, so they can develop innovative new products. The goal? Products that are easy and convenient for you to use.

API - Water Test Kits, Water Conditioner, Medication, Softener Pillow

As a top tier Aquarium Pharmaceuticals supplier, we have the top API products right here on our site. We carry their best fresh and saltwater test kits, water conditioner, and fish food for your pond or aquarium.Choose from our big selection. You'll find everything you need to keep your fish happy. Can't find something? Let us know; we'd be happy to help you select the best product for you and your fishes' needs.