I think this idea could work.This may be a stupid idea but lend me your ear if but only for a moment.
What about a little notification that came up each time you started a new thread (or perhaps in certain areas) where it asks something like "Please take a moment to look at the following threads to provide the necessary information for us to better help you" then it has a few links to threads where it would help people know the information they need to provide.
Maybe in the disease and health section and generally aquaria possibly.
Something simple, just a reminder that if you are asking for a treatment for a sick fish or water quality problem to include: Tanks size, stock list, Ammonia, nitrite,nitrate, temperature and Ph.
I’m sure there’s maybe more like water change scheduled, how long the tank has been setup, etc.
But, I don’t think it needs to be very long or complicated.