Tissue showing splotchy coloration

[A.VOID]

I have a couple pieces right now with some sort of splotchy coloration issue occurring. The tissue looks like its partially bleached in spots and the other color has lost intensity and slightly browned.

I had an alk spike a month ago and I had burnt tips, but that was corrected and other pieces look fine. I'm not seeing burned tips on the two with the splotches.
I have been increasing my max light an hour a week, so I'm thinking it could be a lighting adjustment, but looking for other input.

Alk: 7.8
Ca: 410
Mg: 1400
Nitrates: 2

 

[reefmutt]

pics? could be aefws..

 

[trueblackpercula]

Alk is a little low but pictures sure would help

 

[A.VOID]

Alk in 7's for LEDs

Pic of one. Color lost and splotches

 

[reefmutt]

I wouldn't think an alk of 7.8 ish would cause that blotchyness..
Still looks sort of like aefws, although, it isn't a typical pattern for flatworm munching.
Maybe you could try dipping it in Revive or another dip for flatwornms and see if anything comes off...