01-13-2013, 05:54 PM
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Maybe, maybe not. Guppy fry don't have much of a bio-load and even in a 2g, I doubt the ammonia would be high just from them (unless you're overfeeding of course). Test the tap water because that may be where the ammonia is coming from, and if so then doing water changes would be pointless. Ideally, the fry would be in a cycled tank so that the bacteria are removing all of the ammonia. Is this happening to the fish in both tanks? Or just the 2g? Is there a reason why some went into the 2g and the rest went into the community tank? If the ammonia is high in the community tank, then please post more details about that tank (size of tank, when it was set up, water quality parameters, types of fish, planted or not, etc.).