Shrimp after fish meds question

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Tellurye

Aquarium Advice Apprentice
Joined
Sep 22, 2013
Messages
33
Location
Boston, MA
Hi all,

I treated my 20gal tank with Tetra Parasite Guard for 2 treatments. That's 2 fizzy tabs day 1, 25% water change on day 3, adding 2 more tabs on day 3, and a 50% water changes on day 5 with replacement of carbon back into the tank. (Each treatment is meant for 48 hours).

The medication is not safe for cherry shrimp. I have my shrimp temporarily in a breeder box in another shrimp tank. I really want to move them into my 20gal as soon as possible.

My main question is, how long roughly does it take for carbon to remove medication? I have an AquaClear 30 running, which turns over the volume of the tank ~7.5 times an hour. Would it be safe to acclimate the shrimp into the tank today? I would like to if possible, the shrimp tank they're in currently is small and they're adding to the bioload quite a bit. It's 9 yellow cherry shrimp that I want to put into the 20gal.

Also, when should I remove the carbon that is absorbing the meds? Like a week or so? A day? A lengthy Google search didn't help so much with this whole debacle.

Just to add, the Tetra Parasite Guard worked great on removing internal parasites from a couple of my guppies that had it, if anyone was curious. It didn't affect the healthy guppies nor cories negatively. It also did not harm my plants whatsoever.

Thanks in advance!

X-post from sick fish forum, just covering my bases!

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I was thinking two days based on removal of the dye-based meds (malachite green, etc) from my tank. There was some colour left after 2 days but the bulk was gone. In addition these meds are soaked up by any organic material in the tank very rapidly in the first day.

This I saw matched the med packet you have saying each treatment is meant for 48hrs. For myself I have never tried putting shrimp back in after meds so would be guessing three days if there was no urgent reason for them to go back in.

Bit of guesswork though so curious if anyone has done this or how you got on putting them back in.
 
Thanks for the reply! I waited 24 hours, switched out the carbon twice during this time to make sure it was all out. They went in fine, and are doing great!

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Sounds great, the prazi and metro are fairly safe. Acriflavin shouldn't last long. Just wasn't familiar with the diflubenzuron.
 
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