So is it 1" to 3/4" to fit the supplied hose? like maybe use something like this:I had the same problem with the M2. I used a 1” pvc reduction to proper barb size.
Apollo 1 in. x 3/4 in. Barb Insert Blue Twister Polypropylene Coupling Fitting ABTC134 - The Home Depot
This innovative and patented Twist-In polypropylene coupling connects 2-sections of IPS-sized polyethylene pipe or hose to one another. There is no restriction on the number of connections that can be
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