My echinodorus parviflorus leafs after being planted in the aquarium started
to look thiner and after 1 or 2 days holes started to apear in some leafs.

What happend ? Does anyone know?
Also my anubias and Echinodorus have some leafs with brown dots all over it?
Is it the same?

One more question! Does anyone know any good site about raising aquatic
plants (submersed or emersed) and how to mantain them also outside the
water?