I have started to treat a 33 gal tank stocked with 7 juvenile peacocks. Two of the peacocks are not eating so I have added two treatments (one last night and one this morning 1/2 teas each) of pure metro powder from Jehmco. Is there a way to get the powder to completely dissolve or does it matter? I am just mixing the metro in a cup with water from the tank. Should I turn off my HOB filter for 30 minutes so that the metro is not pulled into the filter media??