Do some more checking on the water softener issue. I did some cursory checking and found some references that water softeners do not actually add NaCL (salt), just Na (sodium) which was said to not be harmful for fish or plants (not sure about shrimp). I didn't do enough checking to confirm this for certain, but enough to know that it's something that should be looked into further before getting a torch out.
Vicki Rena Filstar pimp #142 (four XP4s/three XP2s/one XP1) Eheim pimp #301 (Pro II 2128) Victor pimp #27 (VTS-253B-320)
90g - Journal
Pelvicachromis taeniatus 'Moliwe'
75g - Journal
Pelvicachromis pulcher 'Lagos Red' Better Pics 8-24
29g - Journal
Pelvicachromis pulcher 'unknown' --
29g - Pelvicachromis taeniatus 'Moliwe'
5g - RCS colony
2.5g - Journal