I did not rinse my substrate at all before I put it back in cause I didn't want it to cycle again and I figured the beneficial bacteria would stay there. Didn't think about the ammonia spike. So I guess, at this point, should I take all the substrate out again and rinse it all and start fresh or what? I don't want to fight taking all the shrimp out if I don't have to. Also, what about the plants? What is causing them to die?