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Terms and Conditions Apply!
We can ship to any address in Australia and New Zealand. Note that there are restrictions on some products, and some products cannot be shipped to some locations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full kilo.
The Serenity Oxygen Block offers a practical and reliable solution for maintaining steady oxygen levels in aquariums. It provides a gradual release of oxygen, making it particularly beneficial for tanks with limited circulation or high bioloads where oxygen may become depleted. Suitable for both freshwater and saltwater environments, this block is especially valuable during power outages, transportation of fish, or any situation where mechanical aeration isn’t available. With the Serenity Oxygen Block, aquarists can ensure their aquatic animals receive consistent oxygen support.
Slow and Steady Oxygen Release: Delivers a continuous supply of oxygen over time without needing external devices.
Power-Free Operation: Operates without electricity, making it dependable during power failures or in mobile setups.
Aquarium Safe: Crafted from non-toxic materials, it is safe for use around fish, invertebrates, and live plants in all tank types.
Compact and User-Friendly: Easy to place inside the tank and requires minimal space while providing essential oxygenation.
Supports Fish Wellness: Helps minimize stress caused by low oxygen levels and contributes to overall fish health.
Placing the Block:
Insert the Serenity Oxygen Block directly into the aquarium, sump, or any container used for transporting fish.
Position it where water movement allows for effective distribution of oxygen throughout the tank.
Ideal Situations:
Power Failures: Maintains oxygen levels when filtration or aeration systems are offline.
Fish Transport: Keeps oxygen levels stable during short or long-distance fish transportation.
Oxygen-Deprived Tanks: Perfect for aquariums with poor water flow or a heavy bioload.
Replacement:
Observe the block as it gradually dissolves. Replace once fully dissolved to maintain uninterrupted oxygen supply.
Available Sizes
20G
Be Prepared: Keep several blocks available for emergencies like power outages or unexpected equipment breakdowns.
Use During Transport: Add a block to fish transport containers to support oxygen levels throughout the journey.
Supplement for Low Flow Areas: Place in dead zones or low-flow areas of the tank to help improve oxygen distribution and water quality.
Regular Checks: Although the block supports oxygen levels, routine monitoring of tank parameters is essential, especially in densely stocked aquariums.
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