Alright...
Just logging in to show where we're at. Work is slamming. Kinda trying to chill and hope to catch up to R2R, soon.
The Abyzz A100's adapter ring is meant to fit an 1" slip union and out of pure luck. the screw on fitting from Red Sea is 1" too.
Did not want to go white, but it's all Home Depot had.
Went 1" slip union, to 1" PVC pipe, to 1" slip with an 1" male thread.
Did this last night, and sacrificed a toothbrush to stir the ABS to PVC cement, in the process.
Manifold connection end
1" pump connection end
All together
1" ID
Not the slickest thing, but we have an 1" ID all the way up to the manifold.
Gotta say, I'm really happy in the way Red Sea USA made things right.