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Can anyone identify whay has appeared in my tank please?

Subject: Can anyone identify whay has appeared in my tank please?
by Muke on 13/5/2013 10:07:18

Hi there,

I was a member here a few years ago and received a lot of help and edvice from people as I began cycling and setting up my first tank.
Thanks to you guys I now have 3 tanks!:)

Anyway, my first tank is populated exclusively with tetras and also has two golden apple snails and a couple of shrimps. Just the other day I noticed this at the bottom. Can anyone tell me what it is please?

Thanks in advance

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