Dosing Unit 4 - what can I dose? recommendations?

[gamesnokia]

I am new to sea reef aquarium.
I bought elos 120xl (which should arrive soon) and profilux 3ex with dosing unit with 4 pumps (already arrived).
What is the best usage for my dosing unit with 4 pumps so that I can buy required number of liquid containers:
1 pump - MG
2 pump - maintaining salinity when doing RO feed daily water changes?
3 pump - ?
4 pump - ?

ATO and Auto water change, controlable by optical and floating sensors - I will use separate Sicce Syncra Silent 3.0 Pumps and reverse osmosis controlable by water solenoid with profilux powerbar and optical sensors.
For CA and ALK - I will use calcium reactor.

Thank you in advance,
Peter

[shaggss]

1. Alk
2. Ca
3. Kalk
4. Vinegar!

[Blahenazo]

eheum he is saying he will be using a Ca reactor so Ca and ALK should be cover if its a decend one.

Although Kalk would not be needed , it can be used to help the ca reactor ( ATO ) and lift the ph up a bit.