Water Conditioners
Tap water conditioners, clarifiers, RO water remineralisers, pH reducer and stabiliser.
How to choose?
from€7.99
Unit price: €63.92 / l

from€4.99
Unit price: €41.58 / l

€6.99

€6.99

from€5.80
Unit price: €46.40 / l

from€5.80
Unit price: €46.40 / l

from€5.80
Unit price: €46.40 / l

from€7.90
Unit price: €31.60 / l

from€10.99
Unit price: €21.98 / l

from€7.99
Unit price: €31.96 / l

€7.99
Unit price: €31.96 / l

€4.99
Unit price: €49.90 / l

from€6.99
Unit price: €93.20 / kg
Advice and care
How to choose a water conditioner
Choose by the job: removing chlorine, clearing the water or adding minerals back.
Tap water
A conditioner binds chlorine and heavy metals at every water change.

RO water
A remineraliser restores the hardness shrimp and plants need.

pH slowly
Change pH slowly, because a sudden shift stresses fish.

Popular brands
All brandsFrequently asked questions
Do I need a conditioner if the water stood overnight?
Standing removes some chlorine but not chloramine or heavy metals. A conditioner makes the water safe at once.
Why is my water cloudy?
In a new tank it is often a bacterial bloom, later overfeeding or a weak filter. A clarifier helps, but deal with the cause too.
Read more
Tap water is safe to drink but not always for fish and filter bacteria: it contains chlorine, and heavy metals can get into it from the pipes. A conditioner binds them straight away, so new water can go into the aquarium right after dosing.
The dose is based on the water you add, not the whole tank volume – one of the most common mistakes. When using reverse osmosis water, add enough remineraliser to reach the hardness your species needs and check the result with a test. A water clarifier helps against suspended particles, but water that stays cloudy usually points to overfeeding or a filter that is too young.
The range also includes a pH reducer, a water stabiliser, a bacterial water treatment and vitamins and trace elements for fish. Store the products in the dark and use them before the date on the pack.
Related guides
All guides
Shrimp7 min read6 sections
Shrimp aquarium for beginners: water, filter and food
How to start a shrimp tank: which shrimp suit beginners, what filter and water they need, how to feed them and what to avoid.
Read the guide
Reverse osmosis7 min read6 sections
Reverse osmosis for aquariums: when you need RO water
What a reverse osmosis unit does, when an aquarium needs RO water, how to choose a unit, add minerals back to osmosis water and look after the filters and membrane.
Read the guide


