Serious plumbing question - how to connect a RO membrane drain hose under the sink

[Alexander1312]

I’m currently using an Aquatic Life under-sink water filtration system for my drinking water. My source water measures 32 TDS, and after filtration, it’s still 29 TDS—so it’s time for an upgrade.

I’d like to switch to a standard reverse osmosis (RO) system. My current setup does not appear to have a drain hose, likely because there’s no RO membrane installed.

Has anyone installed a standard RO system in a setup like mine (see photo below)? I’d appreciate any advice or insight on how this would work in my situation.

 

[Coral reefer]

Pretty easy. Basically just poke a hole and stick the hose in. Theres a fitting you can use for it

 

[H2OPlayar]

1.5" Saddle Drain x 1/4" Quick Connect RO Tubing Drain Connector (WHITE) Mur-Lok

Shop The Best Saltwater Aquarium Equipment & Supplies at Saltwater Aquarium. We Carry Everything you will Need for your Fish Tank.

www.saltwateraquarium.com

One option, like Mike said

Dishwasher/RO Drain Line Adapter - Universal Fit ( 1/4" and 3/8")

The Neo-Pure Dishwasher/RO Drain Line Adapter - 3/8" and 1/4" Tube Connection is designed for universal installation on all garbage disposals. The adapter connects where the dishwasher drain inlet is located. The Adapter provides a code listed alternative to the use of the drain saddle for quick...

www.freshwatersystems.com

 

[PjFish]

Whichever route just make sure to watch vids on the right location for installation. You do not want sewer gas back flow or food debris clogging and rotting.. This would be my first two spots for each product mentioned above note Im not an plumbing professional but have installed many kitchen and bathroom sinks along with all the plumbing..
Good luck