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.

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

NO P H DRAMA - Non-acidic formula ensures stable pH levels—no surprises, just balanced water.
ECONOMICAL GIANT - 500 ml treats up to 5,000 gallons—premium care without premium cost.
BIOFILTER BOOSTER - Transforms harmful ammonia into safe compounds, enhancing your tank’s natural filtration.
SLIME COAT SAVIOR - Promotes and regenerates your aquatic pets’ protective slime layer for healthier, stress-free fish.
ULTIMATE TAP WATER SAFETY - Eliminates chlorine, chloramine & heavy metals for crystal-clear, toxin-free water.

Seachem Prime is a powerful 500 ml liquid water conditioner that removes chlorine, chloramine, ammonia, nitrite, nitrate, and heavy metals from tap water. It supports biofilter efficiency and promotes the natural slime coat of aquatic life without altering pH or overactivating protein skimmers. Suitable for both freshwater and saltwater aquariums, it treats up to 5,000 gallons, making it an economical and essential solution for aquarium setup, maintenance, and water changes.

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

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Brand	Seachem
Liquid Volume	500 Millilitres
Item Weight	281 g
Item Form	Liquid
Manufacturer	AQUATIC REMEDIES, AQUATIC REMEDIES , Reg. Off. #5, South Made Street, Kolathur , Chennai , Tamil Nadu-99 ; +91 7042836466
UPC	701485546228 707005178788 611102106516 000116043304
Global Trade Identification Number	00000116043304
Manufacturer	AQUATIC REMEDIES
Item model number	67104330
Product Dimensions	16.76 x 6.35 x 5.84 cm; 281.23 g
ASIN	B00025694O

Seachem Prime, 500 ml

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