don't know if anyone has comments on this, but i have had great success in using a combination of ammonia dosing and partial transferring of bacteria colonies from a known good filter.
it can take some time to get the hang of it, but dose the tank with a small amount of ammonia, then check the ammonia level. get to be about .5 to 1 ppm with the filter running. next, add some good bacteria and monitor the levels, add ammonia as needed to keep the level at .5 to 1.
bacteria will colonize and get stronger faster.
in addition, adding substrate and other items will definitely help after the ammonia is constantly being consumed by the new bacteria.
You know, I thought of that. Dr Tim's has an ammonia product that I was going to use. I decided against it since I will have plenty of plants on the tank. I'm going to transfer some of the ornaments from my 29G, and I will hook up the canister filter that I am using on the 75 to the 29, let that run for a week or two. BTW, I'm not using biological or chemical, just mechanical filtration.
Soon as that is accomplished, I will then add the plants plus maybe some rosy tetras. How many little fishies can I get away with? I mean without hurting them with maybe dangerous ammonia spike.