I am not sure about what your attempting to do with your waste but as for the the pumps themselves I would buy the flojet, I have the sanicon and the customer support is terrible from . My pump has broken the bolts that hold it on to the motor three times ,the first time under year old and they would not help replace the bolts with me making the repairs and they said they had no replacement parts,I found my own supplier of replacement parts to make the repairs so if I buy another one it will be a flojet.