Furan-2 safe for inverts and shrimp?

[jcolley]

I had an outbreak of something in the my 220 and after removing all the fish, diagnosed it as fin rot. Treating them QT with Furan-2.

I left the nassarius, conch, cucumber, and two cleaner shrimp in the DT for the last 4 weeks. I lost several fish in a matter of days to this and want to make sure it's eradicated before restocking.

Is Furan-2 safe for shrimp, snails, and cucumbers or will it injure/kill them if I treat the entire DT?

 

[Sk8r]

My indication seems not. Generally preparations are gram-negative, gram positive, or broadspectrum, which kills both. Furan-2 is broad-spectrum, which means it kills your gram-negative sandbed bacteria as well as gram-positive disease bacteria, so it would kill your sandbed and rock bacteria.

I would think the best treatment for the tank is a lengthy absence of anything the bacteria prey on, namely fish.

 

[jcolley]

So the concern is the cycle and loss of beneficial bacteria, more so than the Furan-2 directly?

 

[Sk8r]

There's no info on the inverts. But likewise inverts don't get the same diseases that fish do, so there's no good treating them for a fish disease.

 

[jcolley]

I'm just worried that I'm 32 days fallow and another 30 may not be enough. How long will this stuff live without food?

I guess I could just pull all the remaining inhabitants and drain/DI soak everything. I don't care so much about the cycle time at this point as knowing the whatever is gone.