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sera guide - Splendid plants in your aquarium

Symptom Possible cause Formation of extremely long shoots, the lowest leaves fall off or the distances be- tween leaves become longer The light is too weak or unsuitable Leaves become pale or glassy transpar- ent No chlorophyll (green leaf colorant) can be formed anymore due to lacking iron Newly purchased plants lose their leaves upon introduction into the tank See “Extra: Aquarium plant = Aquatic plant?” (page 20) The plants show deficiency symptoms in spite of being fertilized Besides the possibility of unsuited fertilizers, it is in this case also possible that active carbon is permanently used as a filter material The leaves turn pale green, while the leaf veins remain dark green Manganese deficiencies cause this character- istic symptom Coarse plant damages Damages caused by snails and plant eating fish often cause severe trouble The bottom ground/the roots are rotting Rot zones have formed within the bottom ground under oxygen exclusion A white layer deposits on the leaves Lacking CO2 makes the plants utilize bound CO2 for their supply, this leads to lime precip- itation 22 Problems and solutions