I currently use tap water, and aged it with 2 pcs of Indian Almond leaves for 2 weeks. Use air pump to circulate the water. View attachment 720338
I am thinking to switch to RO water, and use the same size bottle jar (18.9L) to buy refill RO water from Walmart or Safeway. My shrimp tank is only 5G (20L). I will likely use about 4-5L for each water change bi-weekly and top up daily. Should I just keep the jar closed for the remaining RO water? Or should I still need to use air pump to circulate the water?
No need to recirculate it. Just keep it in a cold dark place. I would suggest remineralization/buffering before adding it to the tank. This way you can make sure the parameters match and that the pH is stabilized before changing the water.
Thank you for the advise. I am going to buy a bottle of refilled RO water. Add Salty Shrimp Mineral GH/GH+. Then close the cap, and let it sit in a cold area. Shake it before doing the water change. Buy a smaller bottle for top off purpose. Not adding anything on that one.
I add Salty Shrimp Mineral GH+ into the bottle, and make it 5 dGH. Now the TDS from my RO water raise from 2 to almost 200. I wonder how other people can make their water around 150 TDS or lower with 5 dGH. Is that achievable?
Right now, my RCS tank is 250 TDS. I did not add any fert, so I believe the shrimp waste raise the TDS from 200 to 250.