Trapcode Tao and Adjustment layers

Hello guys,

I'm pretty much still a beginne in AE and I'm still trying to learn a lot.

Anyhow I encountered a problem using trapcode tao and it's really bugging me off: basically I'm trying to make some DNA strands for a school project and animate them a little bit and after adding 2 adjustment layers to make it look a little bit more realistic the DNA strands have now black annoying edges that may not bother me if there is a black background but become disturbing if you actuallly wat to put another one. Here is what it looks like with a black bg:

Seems pretty fine right? Well here is what it looks like with a white bg:

It really sucks because it looses it's realistic look with those black edges, and I don't really know what to do, can someone help me please?

The adjustment layers are: 1 Find Edges (which is not the problem as I turned it off and it still had that problem) and 2 glow effects one in add mode the other in screen mode. Is there anyway to fix this?