Tips for replacing joker valve and dealing with calcium build up

Aug 9, 2023
3
Cal 29 Shilshole
I just did a full rebuild of my Raritan PHII. Messing, time-comsuming business.
Three questions here.
1) After the joker valve, the discharge pipe climbs 3 feet before dumping into the holding tank. I flushed the system with a ton of water to prevent a bigger mess. But since the discharge pipe with joker valve is on the floor, there is no way to get a bucket under it to catch the 3 feet of waste in the tube. I bled it out little by little with a shallow cut out plastic bottle. It took forever. Any tricks?
2) I've read that CLR can dissolve the calcium build-up. Do I just flush enough down the toilet to fill up the 3 foot discharge tube and let it sit?
3) Please share your calcium build-up prevention tips.
Thank you.