Thank you for your detailed explanation. Did do some reading and indeed most if not all Indonisian crypts can´t survive by beeing kept submersed only. Will not gonna try this out against your advice.
Think I´m gonna make it myself easy by not trying any difficult plants in my first paro set-up.
Great to have see so much knowledge on this forum.
Here comes a new question, which paro species are available at this moment and are in need of breeding (more then others paros)? For my first paro set-up I´m not picky about most colorful species or what so ever, just want to help out and enjoying keeping and breeding them.