Water Tests & Treatment | Surplus Network

Seachem Prime

$6.69 USD

$6.69 USD

API Phosphate PO4 Test Kit (150 Count) for Freshwater & Saltwater Fish Tank

API Phosphate PO4 Test Kit (150...

$11.62 USD

API Phosphate PO4 Test Kit (150...

$11.62 USD

Brightwell Aquatics Microbacter7

Brightwell Aquatics Microbacter7

$13.89 USD

Brightwell Aquatics Microbacter7

$13.89 USD

TAP WATER CONDITIONER Aquarium Water Conditioner 1-Ounce Bottle

TAP WATER CONDITIONER Aquarium Water...

$4.69 USD

TAP WATER CONDITIONER Aquarium Water...

$4.69 USD

Hikari Aquarium Solutions Prazipro Water Treatment

Hikari Aquarium Solutions Prazipro...

$7.95 USD

Hikari Aquarium Solutions Prazipro...

$7.95 USD

Tetra 77140 EasyBalance PLUS Water Conditioner, 16.9-Ounce

Tetra 77140 EasyBalance PLUS Water...

$7.95 USD

Tetra 77140 EasyBalance PLUS Water...

$7.95 USD

Seachem Stability for Marine & Freshwater Aquariums (Each Sold Separately)

Seachem Stability for Marine &...

$7.95 USD

Seachem Stability for Marine &...

$7.95 USD

2x Seachem Prime Fresh and Saltwater Conditioner 100 ml

2x Seachem Prime Fresh and Saltwater...

$8.99 USD

2x Seachem Prime Fresh and Saltwater...

$8.99 USD

Seachem Ammonia Alert

Seachem Ammonia Alert

$8.99 USD

Seachem Ammonia Alert

$8.99 USD

50g Grams 99.8% Min Pure Elemental (I) Prilled SAMPLE USA SELLER

50g Grams 99.8% Min Pure Elemental...

$43.69 USD

50g Grams 99.8% Min Pure Elemental...

$43.69 USD

Seachem Laboratories Flourish Excel Aquarium Plant Supplement (Sold Separately)

Seachem Laboratories Flourish Excel...

$6.95 USD

Seachem Laboratories Flourish Excel...

$6.95 USD

Seachem Flourish Phosphorus 250mL Planted Fish Tank Aquarium Fertilizer

Seachem Flourish Phosphorus 250mL...

$9.99 USD

Seachem Flourish Phosphorus 250mL...

$9.99 USD

API Turtle Water Conditioner 4oz Removes Chlorine Chloramines and Heavy Metals

API Turtle Water Conditioner 4oz...

$9.99 USD

API Turtle Water Conditioner 4oz...

$9.99 USD

API PH Test Kit

API PH Test Kit

$9.99 USD

API PH Test Kit

$9.99 USD

Seachem Prime 250mL Fish Tank Aquarium Water Conditioner Treatment

Seachem Prime 250mL Fish Tank...

$13.95 USD

Seachem Prime 250mL Fish Tank...

$13.95 USD

API Tap Water Conditioner 1 Gallon Dechlorinates Water & Detoxifies Heavy Metals

API Tap Water Conditioner 1 Gallon...

$41.25 USD

API Tap Water Conditioner 1 Gallon...

$41.25 USD

NilocG Aquatics | Thrive All In One Liquid Fertilizer | 500ml Bottle |

NilocG Aquatics | Thrive All In One...

$25.99 USD

NilocG Aquatics | Thrive All In One...

$25.99 USD

Weco Wonder Shell De-Chlorinator - Giant - For Fish Ponds - Pack of 1

Weco Wonder Shell De-Chlorinator -...

$7.38 USD

Weco Wonder Shell De-Chlorinator -...

$7.38 USD

API pH Down 4oz Lowers Freshwater Aquarium pH Safe for Plants and Fish

API pH Down 4oz Lowers Freshwater...

$8.50 USD

API pH Down 4oz Lowers Freshwater...

$8.50 USD

Leaf Zone Aquarium Planted Fertilizer Food Iron/Potassium API 8oz

Leaf Zone Aquarium Planted Fertilizer...

$11.43 USD

Leaf Zone Aquarium Planted Fertilizer...

$11.43 USD

TAP WATER CONDITIONER Aquarium Water Conditioner 1-Ounce Bottle

TAP WATER CONDITIONER Aquarium Water...

$4.79 USD

TAP WATER CONDITIONER Aquarium Water...

$4.79 USD

Aquarium Water Conditioner 16-Ounce Bottle | Tap Water Treatment Gluten Free NEW

Aquarium Water Conditioner 16-Ounce...

$10.85 USD

Aquarium Water Conditioner 16-Ounce...

$10.85 USD

Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier

Seachem Prime Fresh and Saltwater...

$6.52 USD

Seachem Prime Fresh and Saltwater...

$6.52 USD

API Root Tabs Freshwater Aquarium Plant Fertilizer .4 Ounce 10 Tablets

API Root Tabs Freshwater Aquarium...

$10.95 USD

API Root Tabs Freshwater Aquarium...

$10.95 USD

HI755-26 HI772-26 Alkalinity Checker Reagent (25 Tests) - Hanna Instruments

HI755-26 HI772-26 Alkalinity Checker...

$17.99 USD

HI755-26 HI772-26 Alkalinity Checker...

$17.99 USD

HI774-25 Ultra Low Range Phosphate Checker Reagents - Hanna Instruments

HI774-25 Ultra Low Range Phosphate...

$17.99 USD

HI774-25 Ultra Low Range Phosphate...

$17.99 USD

100/200 Aquarium Test Strips Fish Tank 7IN1 PH Water Test Strips Kit Freshwater_

100/200 Aquarium Test Strips Fish...

$9.49 USD

100/200 Aquarium Test Strips Fish...

$9.49 USD

API AMMONIA 130-Test Freshwater and Saltwater Aquarium Water Test Kit

API AMMONIA 130-Test Freshwater and...

$12.50 USD

API AMMONIA 130-Test Freshwater and...

$12.50 USD

API Freshwater and Saltwater NITRATE Test Kit Exp 6/2026

API Freshwater and Saltwater NITRATE...

$12.50 USD

API Freshwater and Saltwater NITRATE...

$12.50 USD

API Freshwater and Saltwater NITRATE Test Kit

API Freshwater and Saltwater NITRATE...

$12.50 USD

API Freshwater and Saltwater NITRATE...

$12.50 USD

API Copper Test Kit

API Copper Test Kit

$12.50 USD

API Copper Test Kit

$12.50 USD

Seachem Alerts Combo Pack Ammonia & pH

Seachem Alerts Combo Pack Ammonia & pH

$11.00 USD

Seachem Alerts Combo Pack Ammonia & pH

$11.00 USD

Seachem Prime Water Conditioner, 2 Liter

Seachem Prime Water Conditioner, 2 Liter

$19.42 USD

Seachem Prime Water Conditioner, 2 Liter

$19.42 USD

Tetra Aquasafe Plus Water Conditioner & Dechlorinator, 33.8 Oz...

Tetra Aquasafe Plus Water Conditioner...

$14.78 USD

Tetra Aquasafe Plus Water Conditioner...

$14.78 USD

API Quick Start 32oz Freshwater and Marine Aquarium Rapid Cycle Starter

API Quick Start 32oz Freshwater and...

$34.99 USD

API Quick Start 32oz Freshwater and...

$34.99 USD

API Quick Start 32oz Natural Fast Aquarium Cycle for Marine and Freshwater Tanks

API Quick Start 32oz Natural Fast...

$34.99 USD

API Quick Start 32oz Natural Fast...

$34.99 USD

Tetra AquaSafe Fish Tank Water Conditioner Aquarium Water Treatment 8.45 Fl oz

Tetra AquaSafe Fish Tank Water...

$6.15 USD

Tetra AquaSafe Fish Tank Water...

$6.15 USD

API TAP WATER CONDITIONER Aquarium Water Conditioner, 16-Ounce Bottle

API TAP WATER CONDITIONER Aquarium...

$9.89 USD

API TAP WATER CONDITIONER Aquarium...

$9.89 USD

Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Water NEW!

Tetra EasyStrips 6-in-1 Aquarium Test...

$10.00 USD

Tetra EasyStrips 6-in-1 Aquarium Test...

$10.00 USD

Seachem Stability New Tank Stabilizing System 16.9fl Oz

Seachem Stability New Tank...

$10.00 USD

Seachem Stability New Tank...

$10.00 USD

Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Water

Tetra EasyStrips 6-in-1 Aquarium Test...

$10.00 USD

Tetra EasyStrips 6-in-1 Aquarium Test...

$10.00 USD

Seachem Flourish Potassium

Seachem Flourish Potassium

$11.29 USD

Seachem Flourish Potassium

$11.29 USD

API Proper pH 7.0 Freshwater Aquarium New/Sealed

API Proper pH 7.0 Freshwater Aquarium...

$10.50 USD

API Proper pH 7.0 Freshwater Aquarium...

$10.50 USD

Seachem Stability

Seachem Stability

$7.99 USD

Seachem Stability

$7.99 USD

Seachem Safe Removes Chlorine, Chloramine Ammonia Fresh/Saltwater

Seachem Safe Removes Chlorine,...

$11.25 USD

Seachem Safe Removes Chlorine,...

$11.25 USD

Seachem Alerts Combo Pack Ammonia & pH

Seachem Alerts Combo Pack Ammonia & pH

$11.99 USD

Seachem Alerts Combo Pack Ammonia & pH

$11.99 USD

Seachem Flourish Aquarium Fertilizer 250ml

Seachem Flourish Aquarium Fertilizer...

$11.99 USD

Seachem Flourish Aquarium Fertilizer...

$11.99 USD

NEW Calcium Test Kit Calcium Test Kit by API

NEW Calcium Test Kit Calcium Test Kit...

$11.99 USD

NEW Calcium Test Kit Calcium Test Kit...

$11.99 USD

API QUICK START (16oz) Nitrifying Cycle Bacteria Fish Tank Aquarium Additive

API QUICK START (16oz) Nitrifying...

$20.94 USD

API QUICK START (16oz) Nitrifying...

$20.94 USD

Seachem Prime 500mL Removes Chlorine and Detoxifies Ammonia Nitrtite Nitrate

Seachem Prime 500mL Removes Chlorine...

$23.99 USD

Seachem Prime 500mL Removes Chlorine...

$23.99 USD

API POND-ZYME SLUDGE DESTROYER Pond Cleaner with Natural Pond Bacteria and

API POND-ZYME SLUDGE DESTROYER Pond...

$35.00 USD

API POND-ZYME SLUDGE DESTROYER Pond...

$35.00 USD

Seachem Flourish

Seachem Flourish

$10.89 USD

Seachem Flourish

$10.89 USD

Aquarium Stick on Thermometer Dual Temperature Indicator Strip Microbiology F/C

Aquarium Stick on Thermometer Dual...

$2.99 USD

Aquarium Stick on Thermometer Dual...

$2.99 USD

GlasGarten Bacter AE Micro Powder/Water Additive For Shrimp Tanks CRS Bee Cherry

GlasGarten Bacter AE Micro...

$14.99 USD

GlasGarten Bacter AE Micro...

$14.99 USD

SEACHEM PRIME DECHLORINATOR AMMONIA NITRATE REMOVER AQUARIUM WATER FISH TANK

SEACHEM PRIME DECHLORINATOR AMMONIA...

$7.49 USD

SEACHEM PRIME DECHLORINATOR AMMONIA...

$7.49 USD

API ACCU-CLEAR FRESHWATER AQUARIUM WATER CLARIFIER 8 oz

API ACCU-CLEAR FRESHWATER AQUARIUM...

$12.45 USD

API ACCU-CLEAR FRESHWATER AQUARIUM...

$12.45 USD

API Ammonia Test Kit 130 Tests for Fresh & Salt Water

API Ammonia Test Kit 130 Tests for...

$15.99 USD

API Ammonia Test Kit 130 Tests for...

$15.99 USD

API AMMO-LOCK Freshwater and Saltwater Aquarium Ammonia Detoxifier 4-Ounce

API AMMO-LOCK Freshwater and...

$8.00 USD

API AMMO-LOCK Freshwater and...

$8.00 USD

API Stress Zyme plus 8oz Fresh & Saltwater Fish Tank Aquarium Bactria Treatment

API Stress Zyme plus 8oz Fresh &...

$13.77 USD

API Stress Zyme plus 8oz Fresh &...

$13.77 USD

Tropic Marin All for Reef Liquid Complete Single Solution for Alkalinity Calcium

Tropic Marin All for Reef Liquid...

$21.89 USD

Tropic Marin All for Reef Liquid...

$21.89 USD

SEACHEM CLARITY Freshwater/Marine Clear Remove Cloudy Aquarium Water Clarifier

SEACHEM CLARITY Freshwater/Marine...

$10.25 USD

SEACHEM CLARITY Freshwater/Marine...

$10.25 USD

ReefHD Reef Flux

ReefHD Reef Flux

$18.45 USD

ReefHD Reef Flux

$18.45 USD

Brand New API FRESHWATER MASTER TEST...

$39.64 USD

Brand New API FRESHWATER MASTER TEST...

$39.64 USD

Aquarium Activated Carbon Filter Fish Tank Water Purification Cube Purifier US

Aquarium Activated Carbon Filter Fish...

$7.33 USD

Aquarium Activated Carbon Filter Fish...

$7.33 USD

API TAP WATER CONDITIONER Aquarium Water Conditioner 16-Ounce Bottle

API TAP WATER CONDITIONER Aquarium...

$11.60 USD

API TAP WATER CONDITIONER Aquarium...

$11.60 USD

Tetra EasyStrips 6-In-1 aquarium Test Strips, Water Testing (19542)

Tetra EasyStrips 6-In-1 aquarium Test...

$11.45 USD

Tetra EasyStrips 6-In-1 aquarium Test...

$11.45 USD

Tetra AquaSafe Plus Water Conditioner & Dechlorinator, 33.8 oz...

Tetra AquaSafe Plus Water Conditioner...

$13.69 USD

Tetra AquaSafe Plus Water Conditioner...

$13.69 USD

Seachem ParaGuard Marine & Freshwater Supplement (Each Sold Separately)

Seachem ParaGuard Marine & Freshwater...

$9.95 USD

Seachem ParaGuard Marine & Freshwater...

$9.95 USD

Hikari Prazipro 16 oz

Hikari Prazipro 16 oz

$44.25 USD

Hikari Prazipro 16 oz

$44.25 USD

Seachem Safe Dry Water Conditioner- Ammonia Detoxifier

Seachem Safe Dry Water Conditioner-...

$15.95 USD

Seachem Safe Dry Water Conditioner-...

$15.95 USD

Seachem Neutral Regulator

Seachem Neutral Regulator

$19.79 USD

Seachem Neutral Regulator

$19.79 USD

Fritz Turbo Start 900 (Saltwater) 1oz

Fritz Turbo Start 900 (Saltwater) 1oz

$16.99 USD

Fritz Turbo Start 900 (Saltwater) 1oz

$16.99 USD

Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Water

Tetra EasyStrips 6-in-1 Aquarium Test...

$14.49 USD

Tetra EasyStrips 6-in-1 Aquarium Test...

$14.49 USD

Salifert Calcium Test Kit- Free US Shipping

Salifert Calcium Test Kit- Free US...

$20.99 USD

Salifert Calcium Test Kit- Free US...

$20.99 USD

Hanna Instrument HI758-26 Calcium Checker Reagent REFILL - NEW

Hanna Instrument HI758-26 Calcium...

$27.99 USD

Hanna Instrument HI758-26 Calcium...

$27.99 USD

API Ammonia test strips 25 ea 0-6ppm For Freshwater/Saltwater Easy & Fast

API Ammonia test strips 25 ea 0-6ppm...

$14.77 USD

API Ammonia test strips 25 ea 0-6ppm...

$14.77 USD

API pH Down 4oz Lowers Freshwater Aquarium pH Safe for Plants and Fish

API pH Down 4oz Lowers Freshwater...

$9.74 USD

API pH Down 4oz Lowers Freshwater...

$9.74 USD

Seachem Laboratories Prime Ammonia Detoxifier (Each Sold Separately)

Seachem Laboratories Prime Ammonia...

$6.59 USD

Seachem Laboratories Prime Ammonia...

$6.59 USD

API Stress Coat 64oz Protects Fish Makes Tap Water Safe for Marine & Freshwater

API Stress Coat 64oz Protects Fish...

$40.94 USD

API Stress Coat 64oz Protects Fish...

$40.94 USD

API TAP WATER CONDITIONER Aquarium Water Conditioner, 16-Ounce Bottle

API TAP WATER CONDITIONER Aquarium...

$14.50 USD

API TAP WATER CONDITIONER Aquarium...

$14.50 USD

Tropic Marin Lipovit Vitamin Additive

Tropic Marin Lipovit Vitamin Additive

$14.50 USD

Tropic Marin Lipovit Vitamin Additive

$14.50 USD

100/50x Aquarium Test Strips Fish Tank 7IN1 PH Water Test Strips Kit Freshwater

100/50x Aquarium Test Strips Fish...

$9.79 USD

100/50x Aquarium Test Strips Fish...

$9.79 USD

API Nitrate Test Kit

API Nitrate Test Kit

$13.99 USD

API Nitrate Test Kit

$13.99 USD

Aquarium Pharmaceuticals 30B pH Down Aquarium pH Adjuster, 16 oz., Model

Aquarium Pharmaceuticals 30B pH Down...

$16.75 USD

Aquarium Pharmaceuticals 30B pH Down...

$16.75 USD

Seachem Safe

$15.39 USD

$15.39 USD

Aquarium Test Tube Holder Rack API Saltwater & Freshwater Master Test Kit Marine

Aquarium Test Tube Holder Rack API...

$9.94 USD

Aquarium Test Tube Holder Rack API...

$9.94 USD

Tetra EasyStrips 6-In-1 aquarium Test Strips, Water Testing (19542)

Tetra EasyStrips 6-In-1 aquarium Test...

$11.49 USD

Tetra EasyStrips 6-In-1 aquarium Test...

$11.49 USD

$Handheld 0-100 ‰ Salinity Mission Refractometer Meter ATC For Seawater Aquarium$

Handheld 0-100 ‰ Salinity Mission...

$14.87 USD

Handheld 0-100 ‰ Salinity Mission...

$14.87 USD

API CO2 Booster 8oz Liquid Carbon Promotes Vibrant Healthy Aquarium Plants

API CO2 Booster 8oz Liquid Carbon...

$13.84 USD

API CO2 Booster 8oz Liquid Carbon...

$13.84 USD

API Nitra-Zorb 7.4oz (Size 6) Fish Tank Aquarium Additive Treatment

API Nitra-Zorb 7.4oz (Size 6) Fish...

$16.50 USD

API Nitra-Zorb 7.4oz (Size 6) Fish...

$16.50 USD

Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier

Seachem Prime Fresh and Saltwater...

$9.59 USD

Seachem Prime Fresh and Saltwater...

$9.59 USD

Aqueon Aquarium Water Conditioner Bottle 16 ounces

Aqueon Aquarium Water Conditioner...

$9.35 USD

Aqueon Aquarium Water Conditioner...

$9.35 USD

Hanna HI-772 Marine Alkalinity Checker USED SKU720-12

Hanna HI-772 Marine Alkalinity...

$40.00 USD

Hanna HI-772 Marine Alkalinity...

$40.00 USD

API Ammo Lock 8oz. Fast Ammonia & Chlorine Detox Freshwater & Marine Aquariums

API Ammo Lock 8oz. Fast Ammonia &...

$12.99 USD

API Ammo Lock 8oz. Fast Ammonia &...

$12.99 USD

Salifert Magnesium Test Kit- Free US Shipping

Salifert Magnesium Test Kit- Free US...

$21.99 USD

Salifert Magnesium Test Kit- Free US...

$21.99 USD

Hanna Instruments HI755-26 HI772-26 Alkalinity Checker Reagent - 25 Tests

Hanna Instruments HI755-26 HI772-26...

$15.00 USD

Hanna Instruments HI755-26 HI772-26...

$15.00 USD

Seachem Flourish Advance WATER PLANT Growth Supplement POND AQUARIUM FAST SHIP

Seachem Flourish Advance WATER PLANT...

$14.95 USD

Seachem Flourish Advance WATER PLANT...

$14.95 USD

API Proper pH 7.0 Powder 8.8oz Sets and Stabilizes Freshwater Aquarium pH to 7.0

API Proper pH 7.0 Powder 8.8oz Sets...

$6.90 USD

API Proper pH 7.0 Powder 8.8oz Sets...

$6.90 USD

API

API' ACCU-CLEAR Freshwater Aquarium...

$8.81 USD

API' ACCU-CLEAR Freshwater Aquarium...

$8.81 USD

Acurel F Water Clarifier (50mL) Fish Tank Aquarium Additive Treatment

Acurel F Water Clarifier (50mL) Fish...

$11.84 USD

Acurel F Water Clarifier (50mL) Fish...

$11.84 USD