bayer still in tank water

[jjoos99]

I finished treating my tank a month ago for aefw. I used bayer and dipped several of my rocks that were too encrusted with coral to destroy the coral by breaking it off the rock to dip. I had some of the bayer get back into the tank and killed off my cleaner shrimps and peppermints. I have done several water changes in the last month and today went to put shrimps back into the tank. Before I got done acclimating them they too were dead. Killed 5 shrimp and threw $55 down the drain. How do I get rid of the residual bayer from my system? Carbon? or just alot of water changes? Next time I will try a simple $5 peppermint shrimp first.
thanks
Jeff

 

[this is me]

You dipped the rocks with Bayer? That's the problem! You can always chisel and scrape the encrusting on the rocks.
You can add poly-filter and run it for several weeks. How are your fish?

 

[jjoos99]

I did dip several of the rocks into the bayer but I double rinsed them but it had to have leached back into the system. The fish were all fine afterwards. I ended up pulling all the fish out of the tank and putting them into a hospital tank. Several of the fish came down with ich from recent fish addition. The bayer could have stressed them out enough to cause the ich outbreak. Probably a good thing for them to be out of the tank during the 5 weeks that I treated for aefw. Will carbon remove the bayer or just the poly filter?
thanks
jeff

 

[BrentH]

ive always wondered if its possible to dip a small rock if the corals super encrusted like u did i use revive though? will the revive leach back into tank also? is it a no no to dip rocks with anything??

 

[jjoos99]

i tried one dip using coral rx. I cant remember if I had my fish in the tank at the time but i know that the corals didnt like it much. The corals were days returning to normal and faded out in color for quite some time with using the rx. I believe if I were to dip the encrusted rocks again I would remove all inverts and fish before doing it or have the rock kept in a separate system to leach out any risidual chemicals with alot of water changes before putting back into tank. Either way it has been a mess.
Jeff

 

[hk855]

Given the properties of imidocloprid, the insecticide in bayer, i would use bituminous or lignite activate carbon or purigen, that I would not reuse. This is a macro molecule that would act more like an anion than a cation/metal ion so the poly filter, used largely for binding metal ion contaminants would not work in my opinion. The bituminous or lignite carbon has larger pores than ROX or coconut carbon, basically the Bayer cant get into these small pore carbons to be bound so they are less useful. The purigen might work too but given its extra high surface area vs carbon this tells me it has smaller pores and is more like ROX so I am skeptical, but it is a petrochemical product so it may have an afinity for hydrocarbon molecules, IF they make it into the micropourous structure. So lots of cheap carbon is probably your best bet.

 

[jjoos99]

I am glad to hear the carbon that I happen to just order today from brs will work for my needs.
thanks
jeff

 

[BrentH]

I'm still not clear of why or if u can dip small pieces of live rock or is the rock just going to soak up a bunch of the dip and leach it back into tank?

 

[pstank1]

I don't think it will absorb enough of the pesticide during the amount of time that you typically dip in bayer to cause a leaching issue. You're much more likely to have large pockets of water in the nooks and crannies of the rock that will mix with the tank water once it's back in the tank.

Unless you're willing to completely dry the rock out before adding it back into the tank, i would not bother with dipping live rock.

 

[jjoos99]

Word of warning. Just alittle bit of this stuff will kill any shrimp you have in your tank. I dipped about 8 or so rocks and dipped them in two different buckets of fresh clean water after the bayer dip. I thought that I was careful but with in several minutes my shrimp were stone dead.
Jeff

 

[tmz]

Ctyflurthrin is one of the active ingredients. It is a synthetic pryethroid. It breaks down in air and light but not much in water. Pyrethroids are lethal to aqauatic life in tiny amounts ;parts per trillion. It may leach from the rock for a long time. I'd try some carbon and water changes.