Masterline - KH Minus Nutrients

Masterline KH Minus aquarium water treatment for plants

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$100.00 away from free WA delivery Free delivery over $100 in WA ($150 elsewhere in Australia).
Free pickup in KenwickOpen Tue to Sat, 12pm to 6pm

Complete the scape

Picked by our team to go with this.

About this product

Masterline KH Minus aquarium water treatment for plants

Masterline KH Minus is a reliable water treatment solution to lower aquariums' carbonate hardness (KH). By carefully reducing KH, this product helps create soft water conditions ideal for sensitive aquatic plants such as Tonina, Syngonanthus, and Eriocaulon. Lowering KH also leads to a more stable and controlled pH, making it easier to maintain balanced water chemistry in planted tanks.

Every dose of KH Minus generates a small amount of CO2, benefiting plant growth. This makes it a water softener and aids in nutrient absorption and plant health. It is completely safe for fish, shrimp, and other aquarium inhabitants when used correctly.

Dosage and usage instructions

The standard dosage is 1 ml per 10 litres of water, which decreases KH by approximately one degree. To make significant adjustments, repeat the dosage on different days instead of exceeding the daily maximum.

  • Do not exceed 2 ml per 10 litres per day, equivalent to a 2-degree KH reduction
  • Always dose slowly over 20–30 seconds in areas with strong water flow
  • Perform drop-test KH measurements before each dose to ensure accuracy
  • Do not use KH Minus to reduce KH below 3 degrees, as this may destabilise the aquarium

Recommendations and precautions

Always follow the guidelines carefully to achieve the best results and maintain a safe aquarium environment.

  • Dose away from livestock and plants to prevent direct contact
  • Repeat doses gradually for significant KH decreases
  • Rinse immediately with plenty of water if the solution comes in contact with the skin
  • Store in a cool, dry place away from direct light or frost
  • For aquarium use only; never ingest or misuse the product

Why choose Masterline KH Minus

Maintaining balanced water chemistry is crucial in aquascaping and planted aquariums. Masterline KH Minus provides aquarists with precise control over carbonate hardness, creating the soft water conditions required by sensitive plants. It also helps stabilise pH and enhances nutrient uptake, contributing to healthier, more vibrant aquariums.

As part of the trusted Masterline range, KH Minus is formulated for safety and effectiveness, making it suitable for hobbyists of all levels.

Order Masterline KH Minus today to create the ideal soft water conditions for your planted aquarium and support healthy, vibrant plant growth.

Delivery and returns

Free delivery over $100 in WA and $150 elsewhere in Australia. Free pickup from our Kenwick store, Tue to Sat, 12pm to 6pm.

Returns policy

  • 5 stars: 17 (65%)
  • 4 stars: 6 (23%)
  • 3 stars: 3 (12%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
R
Ruby Black
Great for stability

Keeps my parameters where I want them. A must have for my setup.

S
Samuel Reed
Works well

Easy to use and effective. Noticed an improvement quickly.

D
Darcy Byrne
Works perfectly

Fast acting and economical. My tank is more stable for it.

G
Greg Marsh
Solid choice

Does the job every time without fuss. Lasts ages.

G
Grace Saunders
Great product

Reliable and effective. Helped me dial in my parameters nicely.

A
Aiden Thompson
Good value

Concentrated so a bottle lasts a long time. Great price for the quality.

M
Megan Bennett
Great buy

Concentrated, effective and good value. Highly recommend.

R
Rhys Parker
Excellent

Conditions the water nicely and the results are clear. Great buy.

J
Jarrod Foster
Top product

Best in its category I've used. A little treats a lot.

C
Cooper Ferguson
Great addition

Improved my water parameters noticeably. Quality product.

S
Spencer Morgan
Trusted

Use it across my tanks. Consistent and reliable every time.

J
Jack Webb
Happy with it

Easy to use and effective. Lasts a long time too.

L
Lily Ellis
Very pleased

Effective and economical. Tank is healthier for it.

S
Sam Hughes
No fuss

Just works. Easy to dose and keeps things stable.

C
Caitlin Ward
Reliable additive

Consistent results and gentle on the tank. Will repurchase.

H
Hudson Evans
Value for money

The concentration makes this great value. Works a treat.

S
Sophie Dixon
Essential

A useful addition to my dosing routine. Does exactly what it should.

T
Tanya Campbell
My go to

Switched to this and won't go back. Effective and economical.

G
Georgia Coleman
Recommend

Effective, concentrated and great value.

B
Beau Marsh
Highly recommend

Helped stabilise my tank and the plants and fish are happier for it.

A
Amelia Hughes
Does what it says

Effective and easy to dose. No complaints at all.

A
Anna Barrett
Concentrated and effective

Only need a small amount. Lasts ages and works perfectly.

A
Aiden Hayes
Good stuff

Does what it claims and helps keep my parameters in check. Recommend.

P
Paige Mitchell
Easy to use

Clear dosing instructions and works as described. Happy with it.

C
Courtney Holmes
Reliable

Consistent results and easy to dose. Part of my routine now.

D
Darcy Fisher
Perfect

Small dose makes a real difference. My go to for this now.