That looks like it will get most worms, including tapes!Good details by Kathy. Windy Bay, in the future if you wish to use a broad spectrum wormer of excellent quality in waterers for flock treatment, Wormout Gel is one I'd highly recommend. Here are a couple of links for it:
http://www.allbirdproducts.com/newproductpages/worm_out.html
http://www.jedds.com/-strse-612/WORMOUT-GEL-100ml-fdsh-1000ml-(Vetafarm)/Detail.bok
-Kathy