Is it possible to use too much chemi pure ina reef tank?

[DanG]

I bought a tub of chemipure elite from J&L, didn't realize that it was a single sock and not several. All the pictures I could see on the tub said 4 units, didn't see the tiny print that said bag.
I've got a sock full of chemipure that's rated for a 175-200G tank and only have a 70G plus 15 ish g in a sump.

Am I risking anything by putting the whole thing in there? Currently only a handful of hermit crabs, a single maroon clown, a coral beauty angel and a baby blue tang (yes I know he will get too big for this tank, I trade him in at the LFS every couple of months).