I am planning on getting discus, (5 adults in a 90 gallon with a few neons) and i was wondering if shrimp would be a good cleanup crew, or would snails be a better choice? Thanks
FW shrimp/snails will not "clean up" the tank unless you have a lot of algae or decaying plant matter. But even with algae there are better ways to deal with it.
In a tank that size I would think you would have a hard time spotting any shrimp especially if you plant it heavily. I also believe that discus are good at picking off shrimp so that may be a problem.
You could buy ghost shrimp. They are usually dirt cheap, they eat your uneaten foods, and if your discus want a shrimp cocktail, you could easily replace them.