Tank Treatments to rid pests

I'm ready to treat the tank to get ready for the swap and wondered what is the best way to treat it. I need to treat for flatworms and any other critters, but I dont want to kill off the good stuff like pods. I'm selling the live sand, and don't want to kill off the good stuff in there either.

I have a big bottle of Iodine that I'm going to dose the tank with.

Any other suggestions?

Angela

 

Nevermind, the person buying the rock wants the critters left alone for fish to eat.

 

yea a wrasse would be best for the flatworms... treating them in the current numbers would poison the tank and kill most everything, since flatworms release toxin when they die.

A good sixline and a tang and that rock will be great.

Brandon