So my tank isn't coming in for another month(125L), and I am in the process of planning and gathering equipment for my build. This is what I currently have and plan on doing:

2 Korallia #4's -thanks bigk
3 MH SE 175
6 PC 16"
2 48" retro t5ho's
Calfo built and bought-thanks Ace
Ace Reactor-thanks darth
55gallon tank for sump
Fans for the lights.

Things I will be purchasing:
Quiet one 6000
Octopus 150 PS
Additional media reactor
Kalk Reactor
sqwd
ATO+reserviour


I am planning on running one reactor w/ carbon, and I want to get another one to run Purigen. I am going to have phosphate removal in a filter bag in the return chamber. I am not fully understanding the calcium reactor/kalkwasser reactors, although I understand their purpose and relationship, and I also see that they cost a fortune. I will likely setup a Kalk reactor because it is cheaper, and continue to dose calcium until I can afford a calcium reactor setup.

Is this feasible? Am I missing anthing you would require? Is there something you would do w/o?

Thanks for your input!!