Meds Kill Bacteria?

[Yanks15]

I recently finished a 10 day treatment for columnaris in my community tank. Did 50% wc and added carbon to filter for med removal. All fish seem fine except 1 female guppie. I tested water 2 days later and I

think I killed the beneficial bacteria in the filter. My NH4- 1.0, NO2-0, NO3-5.0. Before meds, NH4 & NO2- 0 and NO3- 10. Could I have destroyed the bacteria? Do I have to cycle again? I used maracyn and

maracyn2 which I thought didn't hurt the bacteria. Was I mistaken?

I have been cycling a biomax insert in another tank for over a month. Could I pack that into my community filter and instantly cycle it?

ps. The female guppie is pregnant and she likes to sit at the bottom most of the time. She does eat and interact with others but is not very active. She is not very fat yet so not ready to give birth.

Any help would be appreciated.

Thanks.

I also have an ammonia remover insert. Could that be beneficial?

Update.. female died. She seemed weak even before the meds so I guess I expected it. All others acting and looking fine. I put the biomax insert from the

other tank in last night. Hope to see some results today. Did 75% wc and waiting to test.

 

[WILDER]

Maracyn one and two have been known to knock water stats.
How are water stats now.
Increase aeration aswell with bad water quality.

 

[Yanks15]

Well, I'm pretty sure I killed the beneficial bacteria now. After 75% wc, checked stats. NH4- .25, NO2- 0, NO3- 0. It seems that I'm back to square one! Unfortunately, I use Aqueon filters that don't have any

loose media to seed it back. I took out the intake tube and outflow polisher and swished them in the community tank. Could this help seed some back? I removed the biomax because these filters need to grow

the bacteria on a bio-grid, not on any loose media. I may take the bio-grid out of the other tank and swish that in too. Will it help?

Wilder, I use an air stone all the time so aeration has been constant.

 

[WILDER]

is it possible to get some bio spira.

 

[Yanks15]

Is it pretty much a waste to use Nutrifin Cycle? I know most on here say don't bother but I can't see how nutrifin can say that the bacteria lives in the bottle on the shelf for up to 2 years but the stuff doesn't work. Couldn't they be sued if someone took a bottle and checked some under power and saw that there was no live bacteria? I know that I can get some locally so I might give it a try. I don't have anything to lose!!!!!!!!!

Does bio-spira always work? How much $ are we talking-US?

Thanks again Wilder.

 

[WILDER]

Nutrafin cycle is crap I agree. Used it myself.
But bio spira diffferent. Its meant to be good. You have to put it in the fridge.
Not sure how much it costs. Do a search online. But its not cheap.