Just to clear things up...

[Cazamodo]

Ok I plan to use AMS/CRS along with DLS/DWB whiich I am led to beleive are the same thing, just different brand names.

Now whats the difference between DLS/DWB and Gypsum and such? I understand I need to raise the calcium, but dont both of these do the same thing?

[boingy]

I believe DLS is a mix of salts, including gypsum. I don't know the exact mix but the Brupaks website gives a brief guide to using it here:

http://www.brupaks.com/water%20treatment.htm

If you want complete control of your water you are better off using gypsum, calcium chloride, epsom salt etc. DLS is convenient but a bit vague. Having said that, I use it quite happily!

[orlando]

Use GW's water calculator on this site if you want to use specific water treatment rather than proprietary products that may not give you exactly what you want.