The plants were selected of others aquariums where they are very healthy.
The plants are happys with the ordinary tap water, kh 1 ph<=6, the problem is the temperature, no heated, in the moment the temperature around 18ºC, your grow is very slow :mmph:
The color of rotala Bert ..... i don´t understand

..... how i say it

.... rotala is trimming red in other aquarium, in this aquarium preserve the color
Understand me?
Regards and perdon for my english, I attempt increase in quality.