I have a mix of gravel and original Flourite in my 55 gallon that I have been wanting to switch out for a long time. 15 years ago I started it with gravel and then about 10 years ago I took out half and mixed in half Flourite. Gravel and Flourite doesn't look good imo. I'm now planning to take it all out and put in Black Flourite. I would love to put in Aquasoil but I don't have anyplace to put my fish while the ammonia is leaching out. I'm nervous enough as it is about the stress this is going to put on my fish, chasing them down with a net when I'm used to them taking food from my hand. I have some apistos that I'm especially concerned about. I'll then have them all with the plants in a large plastic container with water from the tank while I empty out the old substrate and put in the new. And then transfer everything back. It seems easy enough but I'm wondering if anyone has any tips in making it as easy on my fish as possible and just ways to make the job go smoother. Will I go through a mini-cycle?