[Ralphy The Oscar]

I have a ten gallon tank with 4 Live plants, some ghost shrimp and 5 neon tetras. I was wondering how bad is it to leave dead plant matter in the tank?

 

[DJRansome]

Check your nitrates, the problem is it decays and adds toxins to the water.

It also clogs the filter intakes if not removed.

If it is a tiny bit and nitrates and filter are not impacted...then no problem!