BGA underneath substrate

tiger15

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I have a couple planted bowls hanged by the window. Because of the bowl shape, I am able to peek underneath and took pics of the substrate which is coated with multi color algae. Is it BGA? Since I have none above the substrate, I have nothing to be concerned with but want to confirm it is BGA. It may even be helpful by fixing nitrogen for the benefit of my plants.
 

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tiger15

Member
Joined
14 Mar 2018
Messages
512
Location
USA
The pics don’t show well. It’s patches of light green, dark green, red and purple algae. Is it reasonable assumption that they are BGA.
 

Wolf6

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18 Dec 2014
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279
Location
Netherlands
I have some BGA underneath my soil as well, if it grows too large I dose some easycarbo onto it and then its gone again for months. Dont worry too much about it :)
 
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