RO/DI water has LOW pH

[larryndana]

thanks, i've been using oceanic. not sure if i'm gonna change once i run out, i've got a hole bucket so it may take longer than expected.

 

[azfishgal]

Originally Posted by larryndana
thanks, i've been using oceanic. not sure if i'm gonna change once i run out, i've got a hole bucket so it may take longer than expected.
I was using Tropic Marin and I just switched to Reef Crystals. So far I love it as it doesn't leave a film on my mixing container, powerhead and heater like the Tropic Marin did (it never spread to my DT though). It's also a little higher in calcium and raises my pH to 8.2.

 

[larryndana]

yeah, i saw a thread a few days ago, and most everyone is using reef crystals. i may try that next, but i'm not sure.

 

[weberian]

If you aerate the RO water, the ph will go up to 7.0, then add the salt.

 

[azfishgal]

Originally Posted by Weberian
If you aerate the RO water, the ph will go up to 7.0, then add the salt.
Well, I'm not worried about the water that I use to mix my salt with, as the salt brings my pH up to 8.2, it's the top-off water. Seems silly to have to aerate every time I need to top off, which is three times a day, but if that works maybe I'll try it. I really need to get an auto-top-off set up and then I could aerate the water very easily in the holding bin.

 

[weberian]

Oh well. I'm using a kalk auto-top-off (gravity feed into the sump). Hope you get a ATO soon.

 

[nereef]

adding pure water shouldn't affect pH.