API Aquarium Water Conditioners & Additives

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Care Sheets
Master Aquatic Plant Care: Lush Aquarium Plants & Happy Fish
Tanks with live plants can be excellent additions to your home, bringing a touch of nature indoors. Learn how to take care of aquatic plants.
Updated on November 6th, 2025
Home & Habitat
Freshwater Aquarium Plant Maintenance Guide
Learn how to pick the right aquarium plants, substrate, lighting, and fertilizers to ensure that your aquarium plants thrive and stay healthy.
Updated on July 17th, 2026
Health & Wellbeing
Cloudy Fish Tank? Find Causes, Get Crystal Clear Water & Happy Fish!
Have cloudy water in your fish tank? In order to clear up your water, first you need to understand the potential causes to apply the correct solution.
Updated on June 19th, 2026
Care Sheets
Mastering Discus Fish Care: Tank Setup, Feeding & Water Quality Guide
Learn how to care for a Discus, recommended diet and aquarium setup. Find Discus for sale, supplies and equipment at your neighborhood Petco.
Updated on April 9th, 2026
Care Sheets
Freshwater Amphibian Care: Ultimate Tank, Food & Habitat Guide
Learn how to care for Freshwater Amphibians, recommended diet and habitat setup. Find the right food, supplies and equipment at your neighborhood Petco.
Updated on April 9th, 2026
Vet Q & A
Is water conditioner necessary for my betta's tap water changes?
Yes, tap water may contain chlorine or chloramine. Either can be toxic. Chlorine will dissipate if water is left out for 24-48 hours. This is called aging. Chloramines (used by many municipal water systems) will not dissipate and must be removed chemically with a water conditioner. StressCoat by API or NovAqua Plus by Kordon are both adequate conditioners. Look in the aquarium section of the local Petco or fish store for them.
Updated on September 24th, 2025
Vet Q & A
How to make tap water safe for fish without a water conditioner?
Fresh tap water can be left sitting over night and any chlorine in the water will evaporate. It can then be used for your tank. Depending on the type of fish you have you should adjust pH and hardness of the water and of course temperature. Your local pet store can help you with that.
Updated on September 24th, 2025
Vet Q & A
My fish died. How do I make my aquarium water safe for new fish?
I would recommend to have the water completely changed. New water should be ideally submitted for quality testing. Most pet stores will do this for free or a nominal fee. High ammonia levels, PH imbalances may be responsible for that as well. Oxygen concentration and quality of the filters should be determined as well. Please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.
Updated on September 24th, 2025
Vet Q & A
Do red-eared sliders need anti-ich or water conditioner in their tank?
You shouldn't need anti ich medication for your sliders. The water conditioner (anti chlorine) is always a good idea if you use water from a municipal source. My personal preference for water conditioners are AmQuel Plus, NovAqua and StressCoat. You can purchase them online or in the local pet store. Be sure the water is no deeper than twice the length of the shell. You can read more about slider care here: http://www.anapsid.org/reslider.html
Updated on September 24th, 2025
Vet Q & A
Why isn't API General Cure fixing my Dwarf Gourami's white spot?
If you have an activated carbon filter insert, remove it or it will filter out the medication. Confirm adequate water quality and chemistry since both can impact health and healing. Consider adding a broad spectrum antibiotic to treat infection. You can purchase products such as Kanaplex or Maracyn in the aquarium section of the local pet or fish store. Follow label directions carefully. Plain aquarium salt (NOT table or Epsom salt) can be used at 1 teaspoon per gallon of water to reduce stress and aid in recovery.
Updated on September 24th, 2025

API Aquarium Water Conditioners & Additives

API Stress Coat Aquarium Water Conditioner

API Ammo Lock

API Quick Start

API Tap Water Conditioner

API Aquarium Tap Water Conditioner

API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria

API Stress Zyme

API Protect Goldfish

API PondCare Stress Coat Freshwater Conditioner

PondCare Chlorine & Heavy Metal Neutralizer

API Goldfish Aquarium Cleaner

API PondCare Pond-Zyme Sludge Destroyer

API Betta Water Conditioner

API AMMO-LOCK Freshwater and Saltwater Aquarium Ammonia Detoxifier

API AlgaeFix Marine Aquarium Algaecide

API Pond Stress Coat

API Stress Coat Plus

API Pond-Zyme Sludge Destroyer

API Aquarium Start Up Pack

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