Yes, both bamboo shrimp and vampire shrimp are filter feeders, however, the vampire shrimp is a much larger filter feeder and thus requires more food. Let me put it to you like this, there is an ecosystem that has a medium carnivore and in order to keep everything in order it takes 20 pairs of herbivores constantly reproducing to keep the carnivore fed. If you trade the medium carnivore for a large carnivore then everything will get out of whack. In order to be able to sustain the large carnivore 50 pairs of herbivores would be needed. In order to get the 50 pairs of herbivores you need to give the ecosystem time to adapt and let the number of herbivores rise to sustainable levels before introducing the large carnivore.
The carnivores are the bamboo and vampire shrimp. The herbivores are the particles in the water or the maturity of the tank.
It will take less time to get a tank mature enough for a bamboo shrimp than a vampire shrimp.
All of the stuff mentioned above is why I didn’t mention vampire shrimp just yet, I wanted to get a feel on how op felt about the other filter feeders before implanting the vampire shrimp into his mind. Just to make sure he was willing to meet the requirements of the smaller filter feeders before introducing him the the biggest one.