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Discussion Starter · #1 ·
I accidentally poured the water too quickly back into the tank about a week ago and it disrupted the substrate in the corner, almost uprooting some of my dwarf hairgrass which was planted 3 weeks ago.

That corner has more runners now than any other spot in the tank.

Does oxygen in the roots help plant growth?

I've read a lot about CO2 and have been concentrating on that...but what is the importance of O2 in the root system?
 

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Plant roots actually put O2 into the substrate. I would think your substrate may have gotten a bit compacted over time and disturbing it loosened it up a bit making it easier for runners to spread.
 
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