If you plant some fast growing weeds like Hygro-willow leaf, Lindernia anagallis, Hydrocotyle leucocephala, Limnophila sessiliflora, and Potamogeton ***i won't they just grow faster then they are grazed?
Your shipper drops off 60 bags of traumatized fish and your first obligation is to try and save as many of the live ones as possible, then you worry about the dead ones. Must be hell!
I got mine at Menards. I didn't have any trouble but have read of others who had a ammonia spike a few days after filling thier tank. Might want to rinse well and presoak a few days, stirring often.