Tim thanks for the support. I think Larry might stop by my house and take a look at my tank and help me get the correct dosage. I guess I can't ask for more help than that. I'm going to drop a shrimp or something into my tank so I can catch alot of my crabs. I'm not really that worried, it's just exactly what you said...theres something about putting pesticide into my tank that doesn't sit right with me.