Is it. Safe or a death tank??

[giant19000]

Ok my question is I have a 30g with dwarf freshwater puffers, I had about 5-6 of them now I only have 3 I removed them from my 30 and put them in a 5g for now as I was cleaning the substrate I found like 2 dead and one that was eaten half it's body missing I want to add diff fish to my 30g but I'm scared since the puffers are poisonous will it kill my fish to be in that water???? My cities were living in there and their doing fine I'm just scared though thanks in advance and happy Easter to all


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[oscaroo]

It would be a good idea to check your nitrite, nitrate and Ammonia. Oh and happy easter.

 

[wildman6809]

you can run carbon. that should take care of it i think