@mikst
reasons include:
-some people aren’t interested in fish/me/ we just like the challenge of keeping corals
-many people use it as a disease prevention strategy. Take a read in the disease forum on the site checking out the help threads Jay runs, the stickies showing how fallow and quarantine works. To add fish first usually means the keeper doesn’t plan on running any disease controls whatsoever, and we can see how that works out in the disease forum readings. Even if someone bought pre quarantined fish as an effort to control disease expression, anything wet added from a pet store to the tank that isn’t fallowed brings in disease as a vector.
So that means to add fish first, and still run a real disease prep effort, anyone who begins fish first must have two reef tanks running. One is the final display, the other is a receiving tank that gets all animals destined to go into the display and that receiving tank keeps the entrants in a fallow state (away from fish) long enough to starve out the top disease components you’ll read about in the disease forum preps (for months)
As you can see, to go fish first usually implies 99.99% of the time the keeper doesn’t plan on any disease preps whatsoever, the buckets of lost fish in the disease forum are the outcome.
This isn’t a Debbie downer post, it’s a summary of reads in the disease forum and the direct answer to your question.
Simply refusing to consider the info from the disease forum and how it impacts stocking order, fish first or last, doesn’t make disease expression just stop. Keepers actually have to run the disease preps in order to stem the losses, or, they can just buy replacement fish every eight months.
If anyone reads the disease forum and can make a different inference about fish stocking order of ops from the forum, let me know.