High Alk?

cwb_reeftank · Feb 13, 2018

I'm not I don't have a RODI unit I get my water from a lfs

Randy Holmes-Farley · Feb 13, 2018

cwb_reeftank said:
I'm not I don't have a RODI unit I get my water from a lfs

I'd want some assurance of the quality, like measuring the TDS myself, or seeing them measuring it at the store. Tap water can certainly have substantial alkalintiy in it. If you are confidence in the alk test on the LFS "pure water", I wouldn't use it.

cwb_reeftank · Feb 13, 2018

so what should I do about the water having that high of alk?

Randy Holmes-Farley · Feb 13, 2018

cwb_reeftank said:
so what should I do about the water having that high of alk?

You mean the tank itself? I’d probably let it decline on its own unless corals appear to be suffering.

cwb_reeftank · Feb 13, 2018

They look like they are but also the rodi water?

Randy Holmes-Farley · Feb 13, 2018

I’d stop using RO/ DI water that had detectable alkalinity in it.

cwb_reeftank · Feb 13, 2018

Do they sell rodi water at Walmart or something like that? Because I don't have any other source for rodi water

cwb_reeftank · Feb 13, 2018

like would distilled water be good to use?

Randy Holmes-Farley · Feb 14, 2018

cwb_reeftank said:
like would distilled water be good to use?

Usually, distilled water is fine.

cwb_reeftank · Feb 14, 2018

Ok I'll get some this weekend and see what it test at and go from there also I should be getting my new reagent this week as well

cwb_reeftank · Feb 16, 2018

Ok I have the new reagent from Hanna and I used it to test the distilled water I got today and it read as 0 dKH and when I mixed my salt it came up at 8.6 dKH, which is where it normally is so I think I found my problem.

Randy Holmes-Farley · Feb 17, 2018

cwb_reeftank said:
Ok I have the new reagent from Hanna and I used it to test the distilled water I got today and it read as 0 dKH and when I mixed my salt it came up at 8.6 dKH, which is where it normally is so I think I found my problem.

Sounds good.

Happy reefing.

cwb_reeftank · Feb 19, 2018

Well I test my tank water and it was 11.8 so in Friday I'm doing a 20 gallon water change and see if that will bring the tank water back to normal and thanks for all of your help [emoji4]