Tropical Querex (bottle 30 ml)

  • Querex - biologically active oak bark extract with a high content of natural tannins.
  • Tropical Querex (bottle 30 ml)
Producer: Tropical
Product code: 5900469340516
bottle 30 ml
/ piece

Easy product returns

Buy a product and check it in your own time, at home.
You can return the product without providing a reason within 14 days.
Show details
14 days to withdraw from the contract
Your satisfaction is very important to us, therefore you can make a return without providing a reason within 14 days.
No stress and worry
We care about your comfort, that's why our shop offers returns on favorable terms.
Easy returns wizard
All returns processed by our shop are managed in a easy-to-use returns wizard which gives you the ability to send a return parcel.



Tropical QUEREX - bottle 30ml (per 300 L of water)


A biologically active oak bark extract with a high content of natural tannins. Used to create the so-called black water required for breeding some tropical fish, especially characins and small cichlids from rainforest biotopes in South America. These fish require soft water with a low pH value and a high tannin content. QUEREX reduces the pH value, has a positive effect on fish activity, actively stimulates spawning, protects eggs against fungus, and naturally limits the development of green algae.


TREATMENT: when preparing water for spawning, add sufficient QUEREX to turn the water an amber colour. The desired acid pH value can be achieved by the additional application of AQUACID pH MINUS.


CAUTION! Use only with soft, slightly acid water. Application to hard, alkaline water will totally inactivate QUEREX and cause precipitation of its active tannins.


Try also: Ketapang, Ketapang Extract, Torfin Complex

Ask for this product

If this description is not sufficient, please send us a question to this product. We will reply as soon as possible.

Data is processed in accordance with privacy policy. By submitting data, you accept privacy policy provisions.

Fields marked with asterisk are required
Users reviews
This page uses cookie files to provide its services in accordance to Cookies Usage Policy. You can determine conditions of storing or access to cookie files in your web browser.