Uncured silicone problem....

[robert]

Half way through building of my new sump I run out of silicone. Being lazy to travel the distance to LFS where I originally bought All Glass brand, I bought a tube of GE RTV100, that turned out to be old, and wouldn't cure. Stupid me for not checking the tube until afterwards.

I've removed all the uncured silicone and washed what was left with 99% Isopropyl Alcohol. Now, I'm curious if I still can use the sump, since I'm pretty sure some traces of uncured silicone are still present. Will it be toxic to reef life?

Please let me know your thoughts.