Originally Posted by Pschmitt
is for freshwater. You only need KH
for salt. Why are you testing for brackish? IMO
, no need to test except for salinity.
Thanks for your feedback. Because my tap water is so high in nitrAte I have to buy RO
water and the lfs
said I should test it for GH
so I know how much of the mineral powder to add since I sometimes keep the RO
for a few days and they said the PH will be changing all the time. I find it a bit confusing. I get mixed advice from different lfs
staff. One said I have to use the RO
immediately - then another said keep it as long as you need to before using it. Another said I must add the minerals straight away and then someone else said only add the minerals just before you use the RO
for a water change.
I am in the process of adding salt to make a freshwater tank brackish for bumble bee gobies. The other tank I have is tropical.
Don't I need to test the brackish tank for KH