Store my water in 20g brute trash cans. Think you want food grade so it should have a triangle on bottom and say hdpe or something like that. Best of luck and don't get excited and do a large water change in less you want things to go really bad or you have a fish only tank
I know the cheaper Hanna checker doesn't work with fresh water. I contacted brs about a similar problem and they said could be the problem but was more then likely feeding. They said people have had luck running a gfo reactor inline with your rodi filters. By no means a expert
Do you have some cycled media from your display tank? You need something with the bacteria to start the cycle to keep ammonia out of you're system. I always keep a bag a matrix media in my sump just in case I need to set up qt tank quickly. Just be careful if you medicate with anything might not...
Let me know how you like the mp40. Planning on a lot of sps? Well looks very good I'm planning on either one mp40 or 2 mp10s. Let us know how it works out.