Ok sorry, I have an existing 25 gal and an existing 20gal tank, I want to use everything from those 2 tanks. I am going to run those two filters along with 2 new filters on the new 100 gal. I was going to put media from my pond into the two new filters. I will take the old filters off once the new ones are established. I was told if I use the old substrate from my two tanks ( not the pond) it really kicks up the ammonia that is all settled in the substrate. I was thinking the opposite that the substrate would transfer lots of good bacteria.
Supra