Confetti Monti turning white

[Dhruba.Dutta]

Hi,
Since past few days I am noticing that my confetti monti turning into white.
My po4 and no3 slightly high, bcoz of Dino issue I just faced. So I have raised nutrients. Ca, Kh are 420, 8.2 respectively. Light and flow all are same, no changes are done.
Photo attached. Please suggest.

 

[Mache62]

Looks like maybe some red bugs? Have you introduced a new piece recently?

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[Dhruba.Dutta]

Nothing introduced since 7-8 months or so..

 

[gprdypoo04]

Hmmmm you could always dip it. How high are your nutrients?