This isn't my first rodeo, but it's been over a decade since I've stocked a tank from scratch so I'd like some advice please. My 40 gallon planted tank has been up and running for 18 days now. The only ammonia sources have been decaying plants and decaying driftwood plus waste from the bladder snail colony that's developing. I didn't test the water every day but the highest ammonia value I measured was 1 ppm. A few days ago, my nitirite was up at 5+ ppm but this morning I tested the water and it was at zero. Nitrates had jumped from 10 ppm to 80 ppm. Hooray! I did use plants from a cycled tank as well as a piece of sponge that I'd put in that tank so I'm betting that speeded things up. Both types of fish that I would like to keep, cherry barbs and cory cats, need to be kept in groups of 6+ to be happy so I'd be afraid to add just a couple at a time and give the bacterial colony a chance to catch up. Since I like inverts, I was thinking maybe it would be better to add more inverts (cherry shrimp from my other tank, ghost shrimp, a mystery snail or two) to increase the ammonia supply before I add my first fish. Are they going to add enough bioload to make a difference? Or would I be safe to add let's say 6 young cherry barbs in the next couple of days? I know that my system is still very young and I do NOT want to overload things before it's mature. I am running an AC 70 and might be adding another smaller AC to add more circulation. I do a 50% WC every week. I do have Prime. Many thanks for your help.