i feed my BTA's a mixture of cyclopeze, mysis, and enriched brine. well, that's what i feed the whole tank. and i just thaw the cubes in a coffee cup(i have a designated one!)and suck it up into the tubing with the syringe. this device also works pretty good for moving small zoo colonies. i just use the vacuum to suck them against the tubing and move them to were i want them, then just push the syringe and they're released. works with shrooms too, as long as there's not too large of a rock attached. i used a short(3/4") piece of flexible air tubing to attach the syringe to the rigid tubing, the same way air stones are connected in the riser tubes of and old UG filter.