If I were to order them, I would call and ask when ordering. Not just order on the website.
Looked at the barbed adapters. There is no sizing information listed. I am GUESSING those slip barb adapters are designed to fit the stock blue connectors on outflow side. In the case of the M1, that means they further reduce outflow diameter down to about 1/2". A crying shame. if volume of water pushed out means anything, [if it doesn't why are you using such an expensive pump?] you are better off using the slip adapter and a 1.25" barbed fitting. Not as pretty but will give you better flow.
RJ
Looked at the barbed adapters. There is no sizing information listed. I am GUESSING those slip barb adapters are designed to fit the stock blue connectors on outflow side. In the case of the M1, that means they further reduce outflow diameter down to about 1/2". A crying shame. if volume of water pushed out means anything, [if it doesn't why are you using such an expensive pump?] you are better off using the slip adapter and a 1.25" barbed fitting. Not as pretty but will give you better flow.
RJ