Got new tank, need help on overflow plumbing

little_d

Member
Just got a 65 gallon tank with build in overflow, the two holes are
1 3/4" and 1 1/2". First question is which is for the drain and which is for the return? Second question is would I be able to find parts at OSH to do the plumbing or just buy the kit at 55 buck? I rather save some $$$ building it out of pcv if possible, my only concern is how to seal it tight enough so no leak in the future, please recommend what size pcv to use.
Thanks

 
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