Does this substrate require a 'topping' of gravel, or can it be used alone?

No this one is an alternative to gravel and can be used to top Tetra Complete. It's entirely up to yourself. I have used complete, layer of this active, tetra initial sticks and topped with gravel. Personal choice really. In my other aquarium I have used tetra complete topped with river gravel in a certain part then I used complete topped with active in my grassy and plant parts (nobody will see gravel so what's the point?) Whichever way you do it I would suggest a complete underneath.

How many bags for a 240 litre tank

Well depends how deep you want it? I would say one bag would cover a 30x30cm area about 1-2 inch deep

If I use a quality plant soil underneath, can I grow carpet plants with this? I love the colour but worry its not nutritional enough for carpet plants

This isn't a complete substrate, it's to use under your main substrate/gravel for plant growth. If you use this you don't need soil. But you do need a substrate on top

Will a 3L bag be enough for a 30L tank?

Yes depending how deep you want it

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Active Aquarium Substrate 3 L

Product ID: 49984061

Details

Brand
Tetra
Item form
Granules
Item weight
2500 Grams
Liquid volume
3 Litres
Specific uses for product
Root Soil

🌱Boosts rapid plant rooting

💧Reduces organic water pollution

🦠Encourages beneficial bacteria

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Description

🌿 Elevate your aquarium’s vibe with substrate that powers growth and clarity!

ROOT LIKE A PRO - Porous clay granules create the perfect environment for fast, healthy plant root growth.
NATURAL ELEGANCE - Water-neutral, rich-colored granules add a stylish, natural look to your aquatic landscape.
COMPACT FREE ZONE - Prevents substrate compaction to ensure optimal oxygen flow and nutrient delivery to roots.
BACTERIAS BEST FRIEND - Large surface area supports beneficial bacteria that keep your aquarium ecosystem balanced.
CRYSTAL CLEAR CONFIDENCE - Reduces organic waste buildup, helping maintain pristine water clarity and quality.

Tetra Active Aquarium Substrate is a 3-liter premium clay granule substrate designed to enhance aquatic plant health by promoting rapid rooting and supporting beneficial bacteria. Its porous, water-neutral structure prevents soil compaction and reduces organic water pollution, ensuring a clean, vibrant environment for plants and fish alike. Trusted by thousands with a 4.6-star rating, it combines functionality with a natural, attractive appearance to transform any planted aquarium.

Specifications

ASIN	B00MBKBOGQ
Best Sellers Rank	4,046 in Pet Supplies ( See Top 100 in Pet Supplies ) 11 in Aquarium Gravel
Brand Name	Tetra
Country of Origin	Germany
Coverage	Medium
Customer Reviews	4.6 4.6 out of 5 stars (5,078)
Global Trade Identification Number	04004218246898
Item Form	Granules
Item Weight	2500 Grams
Liquid Volume	3 Litres
Manufacturer	Tetra
Mixing Ratio	1:0:0
Model Number	246898
Number of Items	1
Number of Packs	1
Part Number	246898
Specific Uses For Product	Root Development, Soil Conditioning
Target Species	Plants
Unit Count	3000.0 millilitre

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€ 14.00

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In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

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