Ultrasonic bath

Since i’ve recently picked up a couple of records that require cleaning (one of which is brand spanking new, much to my chagrin) I think its time to resurrect an old project to create an ultrasonic cleaning system for my LPs. I’ve already got an ultrasonic bath and plan to design/3d print some bracketry upon which to mount a record.

Can anyone suggest a good fluid solution to fill the bath with? I’ve seen people suggest photographic rinse aid in order to mitigate residue.

Also, any suggestions on amount of time to clean the record for?