Quote Originally Posted by LIP
It's been tested more than once,
Sorry LIP, but I've got to disagree...

I think this has been "opinionated" more than once...

I've yet to see pictures/documents/files/threads/posts actually showing the difference between 24/0 and 18/6.

I've seen various experienced growers, suggesting 24/0.

I've also seen various experienced growers, suggesting 18/6.

In the end, it's just, a decision up to you... this hobby is great!