Its nice to see such high interest in the Muriatic Acid bath I used for my Ryuoh Stones.
I am by no means a rock/gem experts just a hobbyist and will be happy to provide any feedback on the acid bath for my ryouh stones.
Chaintrades, I will try to answer your questions from your pm.
1. Did you use something like baking powder after washing the stones to counter act the acid? Or did you just simply wash them off with water afterward?
I did not use any chemical to nuetralize the stones. After the acid bath I rinsed them in water and used a toothbrush to brush any stubborn areas. Then I soaked them in water (completely submerged) for 24 hours. You can do a second 24 hour soak if your anal, I did just as a precaution.
2. Did you wear gloves when handling the stone? Would rubber gloves even protect me?
Yes. I used my wife's long cuff PVC coated cleaning cloves, they are a thicker rubber than the standard latex gloves. They are used when working with bleach and other chemicals. The rubber gloves did protect me. No skin burns, ha!
3. How long did you leave the stone in after the initial 2 hours?
I left the stone for the rest of the night at least 12 hrs or more. However, once the bubbling stops the acid basically becomes "inert" or not as strong, and it loses its acidic properties.
4. Have there been any negative effect on the tank water parameters?
No negative effects whatsover, I kept espeis and flagfish in my tank as well as shrimp.
5. In your posting you mention you bought the acid at Home Depot but I am confused with the amounts you used? Can you provide a little more detail please?
Sure, the muriatic acid box comes with two 1 gallon containers, I believe I used both 1 gallon containers. I would say the amount you use depends on how dirty your stones are. If after you bathed them in acid they still appear dirty, give them a second acid wash, or third, or fourth, basically however clean you would like them to be. I felt mine needed a second acid wash to get rid of the hard stuff. I also used a tooth brush when I rinsed them to brush off the hard spots but the acid really cleaned them up. Then I soaked them in water.
6. Sorry for all of these questions! We are having a discussion on plantedtank.net and everyone is asking me to really document this process. We can call it the "Retzius Acid Bath" or RAB for short!
No problem, always glad to help and give back to the community.
I do advise that if you do the acid bath, to do so in a well ventilated area (outside) and wear eye/hand protection. You are working with a strong acid and it does release fumes when it cleans/reacts with the rock.
I hope this helps and good luck with the acid baths! Feel free to ask any other questions.