I'm sorry if what I wrote came out wrong. I'm not saying anyone was wrong I was just adding to Nikki's suggestion to replacing all at once. And I think I read a few post ago about you considering no substrate that's why I suggested the reef central thread
I will take some blame here too. I didn't mean to imply Nikki or anyone was wrong either just if you ask 10 people you get 10 different opinions.
Steve, thanks for the offer; if I need it will give you shout.