Very nice tanks Laura.
If your plecos eat the vals, I think they might be too hungry or the vals already melted or about to melt. vals melt away in acidic water. What's your tank parmeters?
Currently I have Crystal Red, Crystal Black, Golden/White Bee, Blue Bee, Fire Red, Dark Green, Babaulti Green, Snowball, Fire Red and Unidentified Shrimps for sale. PM me for details.