[Smells Fishy in Vancity]

like the title says.... recently bought phosban reactor w/ Rowaphos as the medium to control my phosphate problem. however, during the setup some of the "black stuff" got inside my tank. rookie... that's all. now, my concerns are.. 1) how will this affect my tank chemistry short and long term? 2) will this become poison to my fish in the future if eaten or not? as of yet i have nothing in my tank except water, base rock and recently added live rock - tank been running for few weeks now....

thanks in advance!!!!!