MasterLine KH minus

decreases the carbonic hardness (KH) of water
creates optimal conditions for the plants

generates CO2 after the reaction with the carbonates
contains a graduated measuring cup from 2.5 to 20 ml

where to buy this product

About this product

  • Creates soft water for plants, especially for Tonina, Syngonanthus and Eriocaulon species
  • Decreases the KH and implicitly the pH
  • After each use, CO2 is created, which plants benefit from
  • Ensures a better nutrient absorption by the plants
  • Compatible with all forms of aquatic life, including shrimp, as long as the instructions are followed
  • MasterLine KH Minus contains acids
  • When necessary, depending on the preferred KH value
  • 1 ml per 10 liters decreases the value of KH by about 1 degree
  • Do not use the product to lower the KH below 3 degrees
  • Do not exceed the maximum dose of 2 ml per 10 liters per day, equivalent to a 2 degree decrease in KH
  • Dose slowly over 20-30 seconds, away from livestock or plants, where the water currents are the highest
  • Repeat the dosage on different days if you want a larger KH decrease
  • Avoid contact with the solution and rinse with plenty of water if this happens
  • Perform KH tests before dosing, using drop tests
  • Do not ingest and keep out of reach of children and pets
  • Store at room temperature. Protect from light, heat and frost
  • For aquarium use only

Awesome People Use MasterLine

Aquarists all over the world are using MasterLine with great success

Karthick J

This amazing MasterLine fertilizer is a game changer for my plants. Loving the combination of using All In One Lean and Carbo in my tanks and no more algae in sight.

Adrian Nicolae

I have been using MasterLine for many years and am very satisfied. As long as you follow the dosing instructions, everything goes by itself. The plants love the product and they thank you with their beautiful growth.

Pavol Kulanda

Paint your canvas with MasterLine! A fantastic range of products that suit all levels of enthusiasts, whether you like it simple or to have complete control. Does exactly what it says!

Laura Dan

The plants are an important part of every scape. I rely on the MasterLine range to provide color and good growth. This is the only way I can provide shape, textures, and especially naturalness, to an aquascape.

Liquid Nature

Fertilizers have always been a hot topic in aquaristics. Thanks to MasterLine, it has now become much easier to supply your aquarium perfectly, giving you more time to focus on aquascaping and livestock .

Robert Simo

Why do I recommend MasterLine products? It's simple:
1. Easy to use
2. Suitable for beginners or professionals
3. Your plants will grow healthy
4. Unbeatable performance / price ratio

Florian Breindl

Masterline I, II and Carbo is my favorite fertilizer formula. It provides all the nutrients my aquatic plants need. It's easy to use and has several dosing options. I can use it for strong and fast growth or even for slow growing plants. The color of my aquatic plants is remarkable.

Flaviu Zapartan

MasterLine is not just a brand, it's a concept that is always improving, progressing, diversifying, seeking to understand the needs of the aquarist and to meet these needs with an exceptional product at an affordable price. I recommend it to all aquarists no matter what level they are at.

Kevin Hoehlein

I have tried many fertilizer systems and many worked well. However, I was never completely satisfied with the densely planted aquariums and the demanding plants. MasterLine made possible what other fertilizers could not.

Emilia Mija

MasterLine is the fertilizer used in our family for over 4 years. It gives us the joy of growing beautiful and healthy plants from those with easy requirements to those with a high degree of difficulty, without problems. It's an easy fertilizer system to be used by both beginners and experienced aquarists.

Luis Cardoso

MasterLine has state-of-the-art products to take care of your plants. I like AIOs because they are a very simple and efficient way of fertilizing, which offers very good results. It's my daily method of fertilizing all my aquariums.