After doing a shrimp and a pure ammonia, for my 36 and 55 respectively, I like the shrimp route better. I overdosed my 55 with ammonia which caused a longer cycle and a living room that smelled like ammonia for a couple days. They say the shrimp will stink...but I never noticed it like I did the pure ammonia. Reminded me of when I was house training my puppy.
But the above stated is correct, the die off form lr
isn't enough to get your cycle going long enough for it to complete.