Seachem Prime

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Seachem Prime a complete & concentrated conditioner for both fresh & saltwater
Removes chlorine, chloramine
Detoxifies ammonia, nitrite, and nitrate
5X more concentrated than competing products

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Seachem Prime is a complete & concentrated conditioner for both fresh & saltwater.

Removes chlorine & chloramine.

Detoxifies ammonia, nitrite and nitrate.

5 times more concentrated than competing products.

Seachem Prime:

seachem primeWhy use Seachem Prime when there are other products readily available?

For starters using 5ml to treat 250l is an industry leading dose rate! This gives much better value than any other brand!

Seachem Prime neutralises chlorine and chloramines in your tank and ammonia formed as a by-product. While this happens with all de-chlorinators Prime has a unique benefit. Seachem Prime neutralises the ammonia but crucially leaves it available for the tank bacteria to digest.

Tap water contains any number of highly toxic heavy metals which Prime detoxifies and leaves completely safe. Seachem Prime is also non-acidic and will not change the pH level in the tank.

When used during water changes on established tanks the unique formula of Seachem Prime also helps the reducing of nitrate levels. Nitrate is a common problem in older tanks and increasingly a problem in some water areas, even for new systems.

If yours is a marine system Seachem Prime will not cause the skimmer to over produce foam or stop the skimming process. This is a critical factor to take into account when used in marine aquariums.

The inclusion of essential ions within the formula of Seachem Prime will naturally encourage fish to produce excess slime coating. However Prime doesn’t simply ‘add a coating’ to the fish, it boosts the fishes own natural defences.

Seachem Prime: At a glance

Chloramine remover (via breaking the chloramine bond).
Ammonia detoxifier (but allowing the filter to consume the ammonia, so removing it).
Binds heavy metals.
Increases the fishes slime coat.
Helps with the removal of nitrate.
Safe for marine use.

The strongest, most complete, most concentrated cost-effective water conditioner currently available!

Use 1 capful (5mL) for each 200L of new water. For smaller volumes please note each cap thread which is roughly 1mL. Prime may be added to the tank directly but it is better all round if added to new water first. If added straight into the tank base dose on water volume. Please note a smell of sulphur is quite normal. For very high chloramine concentrations a double dose may be used safely. To detoxify nitrite in an emergency you may use up to 5 times normal dose. If the temperature is 30°C (86°F) and chlorine or ammonia levels are low, use half a dose.

Additional information


50ml, 100ml, 250ml, 500ml, 1L, 2L, 4L


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