Instruction reads use 1 capful for every 50 gallons of new water. So a 35% change on 55 gal. tank, takes 1/4 cap? Sounds too good to be true.

Per Seachem's instructions, if you are doing a partial water change of 35%, if you are adding water directly from the tap (such as with a water changer such as a Python or Aqueon) you add enough Prime for the volume of the whole tank. On the other hand, if you're removing 35% and then adding the water using a bucket, you can dechlorinate the amount of each bucket. For example, if you're using a 3 gallon bucket, 6 drops Prime per bucket, and then add that to the tank. The Prime works almost immediately, so just add the drops to the bucket, and then it is ready to pour into your tank.

How long does it take to work when setting up a new tank? Thanks!!

this removes the chlorine, etc. almost immediately, I add it to the aquarium when doing water changes, ands just pour the water into the tank. remember this just removes the harmful chemicals, your tank will still have to cycle through the nitrogen cycle if you are setting up a new tank.

I end up with alot of foam at the top of my aquariums when I add prime,Have I added too much to my tap water changes,My Tap water is high in iron

The small bottle of prime has a flip cap which allows you to add drops. If you have the large bottle of Prime use an eye dropper. When doing a water change, fill a clean, never seen soap or chemicals bucket of fresh water and add Prime to this fresh water, not directly into your tank - 2 drops per gallon. I also do not get foam. I do a 50 - 60 percent water change weekly along with a gravel vac. If you are stll getting foam after a gravel vac and water change I would suggest you give Seachem a call. They have great customer service. When cleaning your tank, give your filter sponge, floss a swish around in used tank water also to remove some of the gunk and put right back in. Do not rinse in untreated fresh water, by doing so you can lose your cycle.

I'm looking to remove chlorine from my pool, will this work?

It will work but there may be less expensive options from a pool dealer. It decholorinates any typerson of water.

Desertcart Logo

We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan

Customer Services

About Us

Customer Support

Our Other Brands:Hewyn|Selfship

We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan

Customer Services

About Us

Customer Support

Our Other Brands:Hewyn|Selfship

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

S$58

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to SINGAPORE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Description

💧 Keep your aquarium thriving with Seachem Prime — the pro’s secret to flawless water!

BIOFILTER BOOSTER - Supports efficient nitrate removal during cycling without pH swings
SLIME COAT ENHANCER - Promotes natural fish defense for healthier, more vibrant pets
ECONOMICAL EFFICIENT - 500 ml treats up to 5,000 gallons—premium care without premium cost
ULTIMATE TAP WATER DETOX - Removes chlorine, chloramine & heavy metals for crystal-clear, safe water
AMMONIA NITRITE NEUTRALIZER - Transforms toxic compounds into harmless forms, protecting your aquatic life

Seachem Prime is a powerful, multi-action water conditioner that detoxifies chlorine, chloramine, ammonia, nitrite, nitrate, and heavy metals, while promoting the natural slime coat of fish. Suitable for freshwater and saltwater aquariums, it supports biofilter efficiency without altering pH or overactivating protein skimmers. With a high treatment capacity of 5,000 gallons per 500 ml, it’s the economical choice for serious aquarists seeking healthier, more vibrant aquatic life.

Specifications

ASIN	B00025694O
Brand	Seachem
Brand Name	Seachem
Customer Reviews	4.8 out of 5 stars 21,520 Reviews
Global Trade Identification Number	00000116043304
Included Components	1 Piece Seachem Prime
Item Form	Liquid
Item Weight	281 g
Liquid Volume	500 Millilitres
Manufacturer	AQUATIC REMEDIES, AQUATIC REMEDIES , Reg. Off. #5, South Made Street, Kolathur , Chennai , Tamil Nadu-99 ; +91 7042836466 Manufacturer AQUATIC REMEDIES, AQUATIC REMEDIES , Reg. Off. #5, South Made Street, Kolathur , Chennai , Tamil Nadu-99 ; +91 7042836466 See more
Manufacturer Contact Information	AQUATIC REMEDIES , Reg. Off. #5, South Made Street, Kolathur , Chennai , Tamil Nadu-99 ; +91 7042836466
Packer Contact Information	Eagle Network Supply Pvt. Ltd. , Khasra No. 399 Delhi - 110030 ; +91 1143528338
Target Species	Fish
UPC	701485546228 707005178788 611102106516 000116043304
Unit Count	1 Count

Reviews

A**6

A must have for serious aquarium hobbyists

Excellent product, does the job much more efficiently compared to other competitive brands. I was previously using similar water conditioners from few other reputed brands, lost a few fishes over a period of time and some were just not feeling well (darkened colours and swimming on the surface) after regular water changes. Since I used this, I feel I've saved a few fishes from death, they are happy and very lively.

30.01.2017

A**R

Best n effective product

Best n effective product....but as an aquarist i would suggest seachem prime...seachem stability and seachem clarity is a must for every aquarist.

6.04.2018

A**S

Best product

I am writing this review after 6 months of usage. This is one of the Best fish tank water conditioner I have used so far.

15.11.2017

D**A

Excellent product. Makes the water crystal clear and shiny

Excellent product.Makes the water crystal clear and shiny !!! love to use it !!!!

23.07.2018

H**S

Nice product

Very good product

26.10.2019

A**A

Seachem Prime

i recomend to all fish hobbyiest, i am using this in myterrace pond 10ftx10ft , with koi fishes.just follow the instruction on the bottle.

10.10.2018

P**R

Best anti chlorine water conditioner

Pretty good for removing chlorine.Overdose will kill your fish.

31.01.2019

M**H

Five Stars

Very good product and batter then api. Every aquarium hobiest shoud use it. Resnable price . Quick delivery.

4.07.2017

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.