Search  for anything...
Aquatic Experts

TankFirst Complete Aquarium Water Conditioner - Fish Water Conditioner, Instantly Removes Chlorine, Chloramines, and detoxifies Ammonia from Fish Tanks (Concentrated 500 ml - Treats 5,000 gallons)

    • Based on 1,688 reviews
Condition: New
Checking for product changes
$19.99 Why this price?

Buy Now, Pay Later

As low as $4 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, May 26
Order within 17 hours and 32 minutes
Available payment plans shown during checkout

Recently Viewed

Size: Concentrated 500 ml - Treats 5,000 Gallons


Features

  • NO AWFUL SMELL! The problem with some other aquarium water conditioners is that they smell horrible. Hobbyists pour these stinky products into their aquariums filled with their favorite aquatic pets and, YES, fish can smell! Our TankFirst Concentrate water conditioner SOLVES THIS PROBLEM by using a natural additive that is just as effective without the foul odor. Your fish never have to suffer again!
  • CUTTING EDGE FORMULA! Makes tap water INSTANTLY SAFE by removing chlorine, and chloramines; it also detoxifies ammonia. Our complete premium conditioner is perfect for all freshwater, marine, and reef aquariums. Our premium 16.9-ounce bottle treats 5,000 gallons. Use 1 capful or 1 teaspoon per 50 gallons.
  • SUPERIOR PERFORMANCE! Our Premium Water Conditioner is PROVEN and TRUSTED for use with all freshwater and saltwater species including live corals and other invertebrates such as shrimps and snails. Even THE MOST SENSITIVE FISH ARE SAFE and it is the perfect choice for FRESHWATER SHRIMP and live planted aquariums and as a betta water conditioner.
  • REMARKABLE RESULTS! Use our TankFirst Concentrated fish tank water conditioner when adding water lost by evaporation, during water changes, as well as when ammonia and/or nitrite levels are measurable. For exact details of how to use our water conditioner to remove ammonia see description below.
  • BEST VALUE! Concentrated formula treats 5000 gallons! Get more treatments out of one bottle!

Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 8 x 3 x 2.5 inches; 1.46 Pounds


Item model number ‏ : ‎ 250ML


Date First Available ‏ : ‎ August 22, 2018


Manufacturer ‏ : ‎ Aquatic Experts


Country of Origin ‏ : ‎ USA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, May 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great product
Size: Regular 250 ml - Treats 500 Gallons
Review Image by H. Clark H. Clark
Started using this product about two weeks ago for water changes/top-offs and my persistent clouding problem I've been battling in my planted tank has been steadily declining. I was using Prime but this may be my new go-to. I look forward to trying more in this product line.
Reviewed in the United States 🇺🇸 on January 28, 2023 by H. Clark H. Clark
    • As Ordered
Size: Concentrated 500 ml - Treats 5,000 Gallons
As advertised
Reviewed in the United States 🇺🇸 on February 14, 2023 by JoeMaz
    • Works as promised. Happy fish 🐟
Size: Regular 500 ml - Treats 1,000 Gallons
Works as stated, really helpful. Been using for A year and I have happy fish 🐟
Reviewed in the United States 🇺🇸 on January 30, 2023 by Chris T. King
    • It worked!
Size: Regular 250 ml - Treats 500 Gallons
I tried everything to clear up my cloudy water...or so I thought. One treatment, 3 days later water is crystal clear. Highly recommend.
Reviewed in the United States 🇺🇸 on January 5, 2023 by Gina Leibowitz
    • its good
Size: Regular 500 ml - Treats 1,000 Gallons
its works
Reviewed in the United States 🇺🇸 on December 18, 2022 by eddie oriol
    • great conditioner
Size: Regular 500 ml - Treats 1,000 Gallons
Fish are doing great since I started using it
Reviewed in the United States 🇺🇸 on November 14, 2022 by nadya
    • Makes water safe in less that 5 mins
Size: Regular 500 ml - Treats 1,000 Gallons
I ordered this because it was the cheaper than the others at the time, but this was 100% the best there is because I have 6 tanks and I can treat them all and use very little and it docent make the water too soft or too hard for the fish. Would definitely recommend!!!!
Reviewed in the United States 🇺🇸 on September 8, 2022 by Peyton Ashton
    • really good
Size: Regular 500 ml - Treats 1,000 Gallons
My fish haven't died after 2 weeks of use and it looks like it made my water clearer so what more can i ask for from this product. in conclusion great stuff will buy again when the one i ordered runs out.
Reviewed in the United States 🇺🇸 on August 26, 2022 by Leonel Cordova

Can't find a product?

Find it on Amazon first, then paste the link below.