Best Fish Aquarium Water Treatments in 2026

CONDITIONS AQUA-TERRARIUM WATER: Essential care formula for pet reptiles and fragile amphibians.

MAKES TAP WATER SAFE: Instantly neutralizes harmful chlorine, chloramines, ammonia and heavy metals.

INSTANT RESULTS: Liquid formula works in seconds to condition aqua-terrarium water.

Red Sea Foundation A aquarium supplement

Part of Red Sea's Reef Care Program for optimal aquarium coral health

Contains blended salts of calcium and strontium in the ratio required by corals

Contains one (1) API LIQUID SUPER ICK CURE Freshwater and Saltwater Fish Medication 4-Ounce Bottle

Treats "ich" white spot disease in fish and secondary bacterial fish infections

Quickly kills ich parasite, typically within 24 hours of first dose

Reef Foundation C is a magnesium complex for balanced formation of coral skeletons. It contains blended salts of Magnesium and is part of Red Sea's complete Reef Care program. For best results dose according to a measured uptake of magnesium and in conjunction with Reef Foundation A and Reef Foundation B.

Liquid. 1 liter.

Concentration: 1 ml will raise the Mg level of 100 liters (25gal) by 1 ppm

All In One: The all in one aquarium fertilizer contains all the essential micro and macronutrients that are required by your fish tank plants for proper growth and functioning. Just pump the bottle in the tank and let the aquarium plant food do its work.

Appropriate Size: Unlike other low-quality products out there, our 500ml concentrated solution of aquarium plant fertilizer is concentrated enough to dose 2500 gallons of water. With its lasting impact, our fish tank fertilizer is going to be your new favorite.

Practical Solution: With this balanced aquarium fertilizer you don't need to calculate any more nutrients for your plants. This specially formulated liquid fertilizer helps you to keep your live aquarium plants vibrant, leafy, and healthy, without any hard work.

Delivers the nutritional benefits of raw garlic to fish when used as directed

Consists of preserved extract of raw garlic with vitamin-C as a preservative

Does not require refrigeration

Eliminates reactive phosphate immediately upon addition to aquarium

Safe for all inhabitants of reef and marine fish-only aquaria; May be used on an ongoing basis to help control phosphate in heavily-stocked aquaria

Each ml eliminates 1 ppm phosphate in 4 US-gallons of water

Encourages health, growth, reproduction, and vibrant coloration.

Widely used by professional coral farmers to increase tissue growth rate

Provides important nutrients to corals and their allies during periods of stress induced by changes in lighting and/or prolonged exposure to excessive water temperature (often resulting in “bleaching”)

Encourages health, growth, reproduction, and vibrant coloration.

Widely used by professional coral farmers to increase tissue growth rate

Provides important nutrients to corals and their allies during periods of stress induced by changes in lighting and/or prolonged exposure to excessive water temperature (often resulting in “bleaching”)

CONTROLS ALGAE: Liquid formula combats algal blooms that cause green water, string and hair algae and blanket weed.

FOR ORNAMENTAL PONDS & FOUNTAINS: Use only in fountains and ornamental ponds with synthetic liners.

SAFE FOR PLANTS & ORNAMENTAL FISH: Use with live plants and fish in ornamental outdoor ponds as directed.

Contains one (1) API LIQUID SUPER ICK CURE Freshwater and Saltwater Fish Medication 1.7 -Ounce Bottle

Treats "ich" white spot disease in fish and secondary bacterial fish infections

Quickly kills ich parasite, typically within 24 hours of first dose

Magnesium is the third most abundant ion in salt water and essential for coral and reef aquaria.

Magnesium provides buffering capacity by bonding with carbonate ions.

Because magnesium is binding up carbonate, it allows for more carbonate in the water than if magnesium wasn’t there

Seachem Neutral Regulator- Neutralizes pH Levels for Freshwater Aquariums

NEUTRALIZES PH: Neutral Regulator adjusts pH to neutral (pH 7.0) from either a low or high pH and maintains it there

SOFTENS WATER: Seachem’s Neutral Regulator softens water by precipitating calcium and magnesium while removing any chlorine, chloramine, and detoxifying ammonia

AQUARIUM WATER CONDITIONER: For Your Freshwater and Saltwater Tanks or aquariums. Our Water conditioner neutralizes unwanted metals and chlorine and breaks down chloramines, effectively rendering tap water safe in one easy dose. Our All-in-1 Water conditioner remover does it all in one step.

POWERFUL FISH CLEANING LIQUID: It has been formulated to remove ammonia, nitrates, chlorine, chloramine, and heavy metals. It balances pH, adds electrolytes, and increases slime coat in fish while reducing stress levels. Utilize this powerful solution when setting up new fish tanks, cleaning filters, adding new fish, or after a water change.

FRESHWATER & SALTWATER: Any time water is added to the aquarium, a water conditioner must be used to remove any chlorine/chloramine present. During water changes, it helps your betta, goldfish, or others thrive as it balances pH and adds electrolytes, slime, and stress coats for your fish. Our conditioner is safe for saltwater marine invertebrates, plants, and crustaceans.

SAVE TIME ON WATER CHANGE AND FISH CARE : Makes water clear, reduces bad smells. Reduces the time of microbial initialization in new aquarium & quickly eliminates toxic ammonia and nitrite

ENHANCE GROWTH OF FISH & SHRIMP: Improvement of Digestion and feed absorption. Supplement high nutritional contents to increase growth rate of fish

QUICK EFFECT (after 8-10 hours) : Combination of many high-class microorganisms help you own a fish tank as you desire

3 3.4-ounce bottles Seachem StressGuard

Provides slime coat protection for fresh and saltwater aquariums

Reduces stress and ammonia toxicity whenever handling or transporting fish

POWERFUL DETOXIFIER: Keep your pond water safe and healthy by quickly detoxifying harmful ammonia, nitrites, nitrates, chlorine, chloramines, toxic heavy metals, and other organic compounds.

MAKES POND WATER SAFE: Mix in tap or well water - or add directly to pond when adding new water, performing water changes, during initial pond cycling, or when nitrogen levels become toxic due to over feeding or crowding.

CONCENTRATED FORMULA: Treats 2.5 times more water, providing a cost-effective solution for maintaining water quality in larger ponds and water gardens. Will not interfere with biological filters, reducing issues with “new pond syndrome” while keeping nitrates low.

Strong Liquid strontium supplement for marine aquariums

Don use directly in water

To be used on specific requirements

Product 1: Contains one (1) API LIQUID SUPER ICK CURE Freshwater and Saltwater Fish Medication 4-Ounce Bottle

Product 1: Treats "ich" white spot disease in fish and secondary bacterial fish infections

Product 1: Quickly kills ich parasite, typically within 24 hours of first dose

Complex of 20 free-form amino acids found within tissues of fish

Encourages vibrant coloration, formation of new tissue, speeds up growth rates & encourages new tissue growth

Beneficial to all marine & freshwater fish

Product 1: Contains one (1) API LIQUID SUPER ICK CURE Freshwater and Saltwater Fish Medication 16-Ounce Bottle

Product 1: Treats "ich" white spot disease in fish and secondary bacterial fish infections

Product 1: Quickly kills ich parasite, typically within 24 hours of first dose

Suitable Choice: The aquarium fertilizer is specially formulated for shrimp tanks with live plants to provide the plants with proper nutrition, without changing or increasing the need for water changes. This safe and natural fish tank fertilizer will never harm the shrimps or other inverts.

Balanced Nutrition: We have made this aquarium plant food by calculating the right amount of the nutrients that your aquatic plants need. Our aquarium plant fertilizer has all the essential macros and micros in proper amounts so that you don’t have to worry about their healthy growth.

Adequate Amount: The 500ml bottle of the plant food is concentrated enough to dose 2500 gallons of water. The fertilizer is not only effective but also a budget-friendly solution, helping you to fulfill the nutritional requirements of your plants.

Reduce Tank Maintenance - Our commercial grade, non-chemical formula will extend the time between water changes by eliminating the organic waste that accumulates in your aquarium

Made in the USA

Improve water safety - Our fish tank cleaner improves water quality and clarity and reduces odors, but also reduces toxic build up of ammonia, nitrite as well as nitrate and phosphate.

Reduce Tank Maintenance - Our commercial grade, non-chemical formula will extend the time between water changes by eliminating the organic waste that accumulates in your aquarium

Made in the USA

Improve water safety - Our turtle tank cleaner improves water quality and clarity and reduces odors, but also reduces toxic build up of ammonia, nitrite as well as nitrate and phosphate.