Skip to content

JBL Denitrol - Complete Beneficial Bacteria (100/250ml) 4 reviews

by JBL
SKU J23061
JBL Denitrol (complete beneficial bacteria)
  • For aquarium water to suit both fish and plants: when setting up a new aquarium, water changes and after fish diseases for freshwater and saltwater aquariums, turtle and shrimp tanks.
  • Shake the bottle well, measure the right amount in the dosing lid and evenly distribute in the aquarium.
  • Live bacteria with enzymes for the rapid breakdown of pollutants.
  • Healthy water, healthy fish: breakdown of fish excrement and other waste by means of special enzymes and cleansing bacteria.
  • Contents: 1 bottle Denitrol.
  • Use: 10 ml for 20 l water during initial setup and disease, 10 ml for 300 l water during water change.


Nature at home – home for fish and plants

  • Fish need to be as comfortable in the aquarium as they are in nature.
  • When setting up an aquarium and during partial water changes the aquarium needs sufficient bacteria to be biologically cleaned and to quickly break down harmful substances.
  • Bacterial starters contain highly active beneficial bacteria which break down the ammonium/ammonia and nitrite as well as the fish excrements and other waste in the water.

Advantages of the JBL bacterial starters

  • Live bacteria, breakdown of ammonium/ammonia and nitrite through active bacteria, breakdown of fish excrement and other waste.
  • 8 complementary bacteria cultures to break down protein (heterotrophic bacteria), ammonium and nitrite.
  • Gradually start with the stocking of fish in newly set-up aquariums immediately after adding JBL Denitrol.
  • The opinions vary as to whether fish can be added as early as one day after the aquarium set-up. Microbiologists have observed that bacteria reproduce very slowly in a new aquarium when there is no water pollution (nutrition for bacteria).
  • But if you add fish the next day without using a bacterial starter, problems with ammonium/ammonia can occur because the bacteria initially reproduce too slowly to keep pace with the production of pollutants.
  • When using JBL Denitrol (15 minutes after adding JBL Biotopol) higher quantities of bacteria are present.
  • The next day, after the first fish have been added, there is food for the bacteria and they start to reproduce. This will make sure that there are always enough bacteria, so that neither ammonium/ammonia or nitrite will become a problem.

Customer Reviews
4.2 Based on 4 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Customer Photos
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
Alvan P.
Singapore Singapore
I recommend this product

Did not clear the water

Might not be the right product for the condition but easy to use.

East Ocean Aquatic JBL Denitrol - Complete Beneficial Bacteria (100/250ml) Review
Sp T.
Singapore Singapore

JBL Denitrol

Good for every water change

Sp T.
Singapore Singapore

JBL Denitrol


Teck Y.
Singapore Singapore

JBL denitrol starter

Only requires half a cap of solution for my 1.5 feet tank. Used it once and I can see that my water has turned less cloudy. Price was OK for a small bottle. Can use for a year I think for my 1.5 feet tank

East Ocean Aquatic JBL Denitrol - Complete Beneficial Bacteria (100/250ml) Review

East Ocean Aquatic

We are glad that you love the product and improving your water conditions!