How can I control algae when my tank has freshwater salt in it?

I have a female betta and 3 male guppies in a 5 gallon tank. They are doing well and get along great, but all reputable articles are saying to add freshwater salt for gills, electrolytes, and disease prevention for both of these fish. The problem is that all of the snails and sucker fish I know of won't tolerate the salt. It is a newly just cycled tank so Algae isn't a problem yet. The debate is whether to add salt for the health of current fish or don't so I can get a sucker or snail for algae that should soon begin developing. Should I add the salt and use tank magnet to clean algae, or should I not add salt so I can add an oto catfish or snail. Not a fan of algae chemicals but never used them. I don't like adding any chemicals unless necessary. Not sure what is best? Any opinions from experienced fish keepers?