Seachem Prime – 2L Professional Value SizeUltra-Concentrated Complete Water Conditioner for Freshwater & Marine Aquariums 💧 Why Choose Seachem Prime...
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£89.99
Ultra-Concentrated Complete Water Conditioner for Freshwater & Marine Aquariums
When performing water changes, protecting your fish and biological filter is critical. Seachem Prime is not just a dechlorinator — it is one of the most concentrated and complete water conditioners available today.
Unlike basic tap water conditioners, Prime offers multi-layer protection:
✔ Removes Chlorine & Chloramine
✔ Detoxifies Ammonia (without starving beneficial bacteria)
✔ Binds Toxic Heavy Metals
✔ Non-Acidic – Will Not Alter pH
✔ Safe for Freshwater & Marine Systems
✔ Will Not Cause Protein Skimmer Over-Foaming
✔ Supports Natural Slime Coat Production
✔ Helps Reduce Nitrates in Established Tanks
When chloramine is neutralised, ammonia is released — this happens with all dechlorinators.
The difference?
Prime detoxifies the ammonia into a safe, non-toxic form while keeping it available for your beneficial filter bacteria to consume.
That means:
No ammonia spike
No interruption to the nitrogen cycle
No starvation of biological filtration
This is especially critical in:
New setups
Large water changes
Emergency ammonia situations
Heavily stocked aquariums
Tap water may contain harmful heavy metals. Prime binds and detoxifies them completely, making water instantly safe for fish, shrimp, and marine life.
Unlike some conditioners, Prime:
Will NOT cause protein skimmers to overflow
Will NOT stop skimming performance
Is fully reef-safe
Perfect for saltwater aquariums, reef tanks, and sensitive marine species.
Prime doesn’t artificially “coat” your fish.
Instead, it stimulates the fish’s own natural slime coat production — strengthening their immune defence and helping reduce stress during:
Water changes
Transport
Quarantine
Illness recovery
A little goes a long way.
Dosage:
Use 5 mL per 200 litres (50 US gallons) of new water.
Each cap thread ≈ 1 mL for smaller volumes.
✔ May be added directly to aquarium (dose for full tank volume)
✔ Best added to new water before filling
✔ Sulfur smell is normal
Because Prime is highly concentrated, the 2L bottle treats an enormous volume of water, making it one of the most economical premium conditioners available.
Most conditioners only:
Remove chlorine
Neutralise chloramine
Prime goes further by:
Detoxifying ammonia
Binding heavy metals
Supporting biological filtration
Assisting nitrate control
Remaining fully marine compatible
It’s effectively a complete water protection system in one bottle.
Freshwater aquariums
Marine & reef systems
Planted tanks
African cichlid setups
Large systems & commercial use
