Seachem Prime, 500 ml

Q: 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.

Q: 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.

Q: 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.

Q: 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.

Product ID: 71687878

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Details

Brand
Seachem
Liquid Volume
500
Item Weight
0.6 Kilograms
Item Form
Liquid
Manufacturer
AQUATIC Reg. ;

🌿Boosts natural slime coat

💧Detoxifies chlorine & chloramine

⚙️Neutralizes ammonia & nitrite safely

Frequently Bought Together

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API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored

Description

💧 Elevate your aquarium’s health—because your fish deserve the best!

BIOFILTER BOOSTER - Transforms harmful ammonia into harmless compounds, accelerating tank cycling without pH swings.
SLIME COAT SUPPORT - Enhances your fish’s natural protective barrier for healthier, stress-free aquatic life.
ECONOMICAL EFFICIENT - Treats up to 5,000 gallons per 500 ml bottle—premium care without premium cost.
PROTEIN SKIMMER FRIENDLY - Won't overactivate skimmers, ensuring smooth filtration and stable water chemistry.
ULTIMATE TAP WATER SAFETY - Eliminates chlorine, chloramine & heavy metals for crystal-clear, toxin-free water.

Seachem Prime is a powerful, multi-action water conditioner that removes chlorine, chloramine, ammonia, nitrite, nitrate, and heavy metals from tap water. It promotes the natural slime coat of fish, supports biofilter efficiency during tank cycling, and is safe for both freshwater and saltwater aquariums. With a non-acidic formula that won’t disrupt pH or overactivate protein skimmers, this 500 ml bottle treats up to 5,000 gallons, making it an economical essential for every serious aquarist.

Specifications

Brand	Seachem
Liquid Volume	500 Millilitres
Item Weight	0.6 Kilograms
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; 600 g
ASIN	B00025694O

Have a Question? See What Others Asked

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.

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

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

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

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