reservoir reeks of sulfur...

I changed my ebb and grow reservoir Sunday. I added a little too much ph down to it so I decided to take some wood ash and jack up the ph a little which worked perfect. Yesterday I noticed the water wasn't very clear...not in terms of color but in terms of mercyness. Looks like there's this white stuff in it or something. I also noticed yesterday that I had soap suds in my water like floating on top..at least that's what it looked like. This morning when I went to check my ph/tds, the reservoir reeked of sulfur..like really bad. I am using the 2 part sensi bloom and bud candy from advanced nutrients and pumice hydro balls for a medium. Is this a bad sign that the water is smelling so much like sulfur...will it affect my plants? I'm assuming this is bad and I should change reservoir's asap but I just dont wanna waste nutrient.