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Hello, using sera toxivec plus very generuous partial water changes - however without filter "cleaning" - are recommended as immediate measures. The so-called nitrite peak will then...

Hello, sera omnipur can be used in such cases since it is copper free. sera mycopur, however, is not tolerated by shrimps due to its - albeit low - copper contents. Best regards se...

Hello, the following approach is effective in the long run:regulate the ratio betwen nitrate and phosphate in a way that the plants are just sufficiently provided with nitrogen and...

Hello, reducing the nitrite value is of course good, since nitrite is very toxic for fish. However, it has nothing to do with algae growth. As an immediate measure, you can bind the...

Hello, Concerning "sand 0.5 mm":no, that is alright. However, it must be round grained (not crushed sand), especially if there are fish in the aquarium that live on the bottom or...

Hello, if it is really caused by lacking minerals, sera florena (liquid) is recommended for stem plants, sera florenette (tablets) for plants with strong roots such as Echinodorus sp...