LF 1 inch PVC Wye

[Ryanerickson]

Wye fittings are more for drainage you can get them in abs or larger PVC. Drainage fitting but finding one in 1" PVC will be hard. I'm a plumber and never seen one I'm sure they make them Just a odd fitting.

[Baker]

Abs wye's are very common in 1 1/2". So you would need to bush them down to the 1".

[monocus]

i find a larger drain better.all my tanks have 2"stockman drains.where i y ed it on my frag tanks i reduced one of the y s for my algae scrubbers