Frequently asked questions

Freshwater Invertebrates

"Crystal Red" shrimps in a 25 liter aquarium

Hello, possibly, the orange animal is a dwarf crayfish (Cambarellus patzcuarensis 'Orange', often referred to as "Mexican Orange" dwarf crayfish)? 10 - 15 animals are alright;...

Freshwater Care Invertebrates

Continuously rising nitrate and phosphate levels / Snail invasion

Hello, Concerning "phosphate and nitrate levels":these pollution parameters are partially related to pollutants from tap water, but mostly to feeding. They therefore rise quickly,...

Freshwater Invertebrates

Keeping Spinycheek Crayfish (Orconectes limosus)

Hello, Concerning "plants":sooner or later this will most likely turn out to be "take them apart" and at least partly "eat them"! Concerning "food":the crayfish will literally eat...

Freshwater Invertebrates

Snails: how many should I add, and how can I monitor and increase water hardness?

Hello, this is exactly the right attitude, snails are unfortunately too often considered a "pest", which they are not! Just add a few trumpet snails, their number will regulate by...

Freshwater Invertebrates

Worms and Hydra

Hello, Concerning "flalworms/Hydra":flatworms are one possibility considering the animals that creep on the glass pane, however threadworms (nematodes) or oligochaetes are also...

Freshwater Care Invertebrates

Adjust pH value for shrimps

Hello, in case the pH value refers to "fresh" tap water you should simply wait, as it usually sinks in an aquarium (except if the carbonate hardness is very high). Otherwise I...

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