Brackish guppies

[Mumma.of.two]

I'm thinking of converting my guppy tank to brackish so I can keep some bumble bee gobies. Will this harm my guppies? If not, can anyone give me some tips on how to do it. And will the only extra things I will need are a hydrometer and marine salt?
Thanks!

 

[bruinsbro1997]

I dunno if the guppies could survive but mollies are bigger and similar looking and can survive in brackish water.

 

[TheCrazyFishLady]

They can tolerate brackish as long as you do a slow acclimation. But, there is a chance some might not make it. Mollies are a great alternative. They acclimate much better and can potentially live in full salt water.

 

[Mumma.of.two]

Thinking of trading my guppies and tetras in now to make room. But I don't want them to go to a bad home