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Discussion Starter · #1 ·
I came homw after two days away and found my frogbit covered in little tiny greyish bugs. There a few of these on the plants when I received them about a month ago, but they were gone in a day or two. This time there are WAY more.

Anyone seen this? Harmful? Kind of doubt it, but I don't know.

Need pics?
 

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They are aphids and they can, when they get numerous, damage the plants. I had an outbreak of aphids once and I got rid of all of them by squashing all I could see between thumb and finger, and repeating daily, until I got every last one. The plants I had were not floaters, and so the aphids could only be on leaves in contact with the surface. I don't think they do very well if all the plants are submerged, although they do seem to be enclosed in an air bubble if you sink a plant that was previously at the surface. Try looking up aphids in the search box and see what others have done.
 
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