Par numbers are good to know, I'm learning about it and reading as much as I can. I like going against the grain.
People can believe it or not, what do I care lol it's my tank and I'm loving the growth. Being brand new in this hobby I've noticed (on these boards and forums) people tend to spew information, with little or no experience. I don't give much advise here unless I'm sure of what I'm saying.
One LFS said I wouldn't keep the acro either, gave it to me because it was sick looking, and I kept it for months and it came back and grew. Also I use tap water lol