White for acrylic and blue for glass?

[1guydude]

Is this right fir scrub brushes or should i just buy a new one for acrylic just to be sure?! Thxs
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[1guydude]

For*

 

[albano]

I do occasionally use the white on my acrylic tanks for the past 30 years, but prefer to use my magnet cleaner with an acrylic sleeve over it... they are available from Champion Lighting.