i have tryed all kinds of injections before, but after i bought my peppermint shrimp, i didn't have to buy or do anything for aiptasia. i only have two up in the front of the tank where the shrimp doesn't go. now after a bought my coperband butterfly and peppermint shrimp, i'm cultivating some aiptasia for my copperband to play with, in my refugium. aiptasia completely lost the battle only with introduction of big peppermint, who ate the anemone of huge sizes and those that copperband couldn't reach. the peppermint was wiping out huge areas of the anemones over night. the coperband was eating small aiptasias only, and also has huge taste for feather dusters, that he wiped out, which i wasn't happy about