i have a 200ltr tank... not sure what that is in your terms... sorry
i have all the testing equipment the man at the shop sold me.
my levels are still a bit up in the air because my live rocks are still in the course of creating the natural bio eco system situation...
i still need to add more live rock as well it is just a matter of when i have a spare pay check!
but... i really want to be ready for my next step.. i am a perfectionistn n cannot have enuf research under my belt!
i do not have a sump.. it is something i am willing to look into in the future are they worth the effort.?.?