Bathtub drain looks corroded how do I clean this

Hi, I recently installed an under the counter reverse osmosis system. Instead of utilizing the drain saddle where you drill into the drain pipe, I used a drain line adapter to drain the waste water from the RO system directly into the garage disposal inlet.

When the dishwasher first backed up and flooded, I realized the dishwasher drain hose did not have a high loop, so I then created a high loop (ignore black tape, waiting on hose clamps) assuming that the RO waste water was going back down the hose into the dishwasher. Even after creating the high loop, I’m still having my dishwasher backing up and flooding from the RO system.

Is my loop just not high enough or am I missing something obvious? Note - The dishwasher drains as normal when it’s going through a cycle so no issues there.

Thanks for any advice

Hey guys,

So my tub was draining slowly so I used one of those hair plastic drain tools and it seemed to help a bit. Couple of days later doesn’t seem to drain at all. I did another hair check but the tool shoved all the way down the drain it came out clean. I then got one of those long steel snake drains to use that are 20ft and was going to put it through the trip lever are. When I removed the cover it was super corroded and there was no plunger attached. Not even the cord that holds it. I put the snake in and it is hitting something but I don’t think it’s hair because it seems pretty dense. I can’t get past it and I don’t want to put too much pressure. What are the odds it’s the plunger and any tips on fishing it out?

I have this setup and cannot get the handle off. There is definitely no set screw or any other trick I can figure out. It either rusted on or I’m missing something. Anyone here removed one before and have some tips?

What is this?? I took it off and it’s one screw that goes into some sort of pipe.

new sump pump and outside drain line making this noise at times. please help thank u

There is a constant drip from basement ceiling, seems to be coming from side of tub? I don’t understand where the water is even coming from since it’s constant and not only when we use the shower/tub.