I am still new to this hobby, but when I was still "newer" I bought two tiny hippos, one lasted one day the other one two. Brought them back to the LFS
and a water sample as requested. The freaked out over the "low magnesium" that "obvioulsy" killed the two fish...thus no refund or credit. Yeah right, I was so shook up, they actually suckered me into buying a bottle of Mag Up.
After I got home I started doing some research and needless to say the bottle is still full.
I now realize that my tank was just not ready for these fish and probably still is not but to give me B.S. about Magnesium? Try that on me today... and I would cause a scene.
I am dying to have two, but I know I am still not ready and QT
is an absolute must for those fish.