Sunken Garden Bacter Tab: Beneficial Bacteria Capsules for Freshwater Aquariums (Pack of 6 + 1 Free)

What is Sunken Garden Bacter Tab?

It is a beneficial bacteria capsule for freshwater aquariums. It adds bacteria that support biological filtration, the process that breaks down fish waste (ammonia) into less harmful compounds. It is used in new tank setups and after filter cleaning or water changes.

What do beneficial bacteria do in an aquarium?

Fish produce ammonia, which is toxic. Nitrifying bacteria convert ammonia to nitrite, then to less harmful nitrate. These bacteria live on filter media, substrate, and surfaces. When they are missing or disrupted, ammonia and nitrite can rise.

How many capsules do I need?

Use 1 capsule per 30 litres of aquarium water.

How do I use it?

1. Calculate your tank’s actual water volume.
2. Use 1 capsule per 30 L.
   
3. Keep the filter and aeration running.
4. Dose after water changes or filter cleaning, or as your label directs. 
5. Do not exceed the stated dose.

Does it cycle my tank instantly?

No. Cycling takes weeks, and bacteria products support the process rather than skipping it. Test ammonia and nitrite regularly until readings are stable.

What is in each capsule?

• Pack: 6 capsules + 1 free = 7 capsules
• Coverage: 7 capsules treat about 210 L at 1 per 30 L
  
• Use: Freshwater aquariums

When should I use it?

• Setting up and cycling a new aquarium
• After a water change (once a dechlorinator has been added)
• After cleaning or replacing filter media
• After a course of fish medication
• In shrimp, planted, nano, and community tanks

Frequently asked questions

How many Bacter Tabs do I use per tank?

One capsule per 30 litres of aquarium water. A 60 L tank needs 2.

Can I use it with a dechlorinator?

Yes. Add the dechlorinator to new tap water first, then add the capsule after. Follow your label’s order.

Can I use it with medication?

Add bacteria after a medication course ends, since some medications can harm bacteria. Check each product’s label.

Does it help with cloudy water?

Not directly. Cloudy water has many causes, such as bacterial blooms, overfeeding, or dirty filters. This is not a clarifier.