Looks like a sketchy site, with bad info. P harmala and Psychotria definitely will work together...but that specific brewing method sounds incredibly inefficient :[
No offence but questions like this have been sort of beaten to death...Working with these plants is a learning process, and we're therefore not fans of spoon feeding everyone answers that a few minutes of simple searching can dig up. I recommend spending some time researching these plants more thoroughly before taking them. All of the chemical and procedural info you need to know is all over the forums and the wiki. Just read read read. If you have any specific questions after that, then come in the chat if you like, or post them here if searches aren't turning anything up.
good luck!
<Ringworm>hehehe, it's all fun and games till someone loses an "I"