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Water Care for fish

Comparing 323 products in “Water Care for fish” from 14 online shops. Every product shows its price, its price per kg or litre and its stock status; prices are updated daily.

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Frequently asked questions

More questions and answers

What is the difference between ammonia and ammonium in an aquarium test?

In water, ammonia exists in two forms: toxic free ammonia and much less harmful ammonium. At low pH there is more ammonium, and as pH rises the toxic form increases, so most tests show the total and pH helps judge the danger.

Are aquarium clarifiers safe for fish and shrimp?

Used as directed they are generally safe, but overdosing can lower oxygen or clog the filter. For sensitive animals like shrimp, choose a product the manufacturer states is suitable for invertebrates.

How do I lower the pH in an aquarium?

Peat in the filter, catappa leaves, alder cones, driftwood or mixing in reverse osmosis water, which lowers KH, all reduce pH gently. Chemical pH-down products act fast, but in hard water the pH often bounces back, so they are used with care.