Need help

[Themollyguy]

I currently have a 40 litre tank with 7 molly fish in. I just got home and my mom had purchased 3 Japanese goldfish ( about 2 inches big ) and mixed them in the same tank. Is it safe to keep them in together ? I just inserted a submergible filter and its also running a gravel filter. Need opinions! Thank you - Jesse

 

[Neo287]

Its not recommended mixing tropical and goldfish together, as it can create various problems, not to mention goldfish put out large amounts of waste.

 

[nirbhao]

Oh, moms.

Goldfish and mollies have very different needs, and your tank size and filtration are not up to all that the goldfish will dish out.

By the way, I love undergravel filters for a lot of reasons (mostly related to water flow), but they are really meant to be supplemental.

the tiny computer is full of delicion!