[gregzz4]

Calcium reactors aren't for everyone, nor can everyone afford reliable equipment for said units.
If you're as anal as I am, how do you adjust your newly mixed water that's out of whack before you do a waterchange?
pH probes and CO2 regulators can fail and if ignored things go out of whack.
And they can be a bit complex for newbies.
Dialing in and keeping Mag levels with a Ca reactor isn't that easy either. What happens if you add too much Mag media? Shut down the reactor until tank Mag drops? Remove all media and remix new stuff? Or keep taking it apart to add more media until it's adding enough to your tank?
I thought years ago about getting a setup and decided against it.
They work great for many people, but aren't for me.
Liquid dosing is a great way for newbs to start understanding their tank's chemistry.