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Ammonia Block

5.0
£5.99
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was £8.39 Save £2.40
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David E.
Rotherham,
United Kingdom
29 April 2026
There’s so many products on the market, and believe me I’ve tried far to many of them and let’s face it do the ever work as well as the description says they do? We finally a product that actually works better than what it’s advertised to do. Huge thanks to RP Aquatics for this ammonia block which does just that, blocks ammonia from getting back in your aquarium.
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Ammonia Block
Product Details

Upgrade your aquarium maintenance with the RP Ammonia Block —the ultimate defense against ammonia-related issues!

Key Features & Benefits

Rapid Ammonia Eradication

The Ammonia Block outperforms all other products on the market. It eliminates toxic ammonia swiftly, allowing new aquariums to be stocked immediately without the risk of ammonia spikes or fish loss. Simply add the appropriate number of pods to your canister filter and let it mature naturally over the next 12 weeks.

Peace of Mind

Whether you’re on vacation or away from home, the Ammonia Block ensures your aquarium remains safe and stable.

Long-Lasting

Each pack contains three 100g pods, sufficient for treating up to 1500 liters of water.

Versatile Application

  • Safe Start for New Aquariums: Kickstart your aquarium without hesitation.
  • Ammonia Spike Prevention: Keep ammonia levels in check.
  • Quarantine Tank Setup: Quickly establish a quarantine tank.
System Compatibility

Ideal for external canister filters and some large internal filters.

Proper placement is critical: Ensure the Ammonia Block lies flat (not squashed) after the biological section to maximize water exposure. Incorrect positioning may starve bacteria of their food source.

For sump filtration, release resin from the pods for use in reactors (flow rate: 50-150lph).

Dosage
  • 1 pod for 0-250 liters
  • 2 pods for 250-750 liters
  • 3 pods for 750-1500 liters
Suitability & Precautions

Remove pods during fish disease treatments (similar to carbon usage).

For mature aquariums or cases with ammonia spikes, clean the filtration system before applying the Ammonia Block.

Compatible with other RP Aquatics products.

Downloads

Product Data Sheet