Tropical Fish Forum

Tropical Fish Keeping Help and Advice => General Fishkeeping advice => Topic started by: PaulC on September 29, 2021, 06:27:34 PM

Title: Water chemistry alteration.
Post by: PaulC on September 29, 2021, 06:27:34 PM

 :wave: all.

So, as part of my current project of a (kinda) low tech planted tank, I am planning on keeping nice, peaceful, shoals of small fish including tetras. However, my tap water is basically liquid rock, carbonate hardness is at 10, general hardness 14.
I am now producing RO so, the plan is to reduce the hardness but not lose all of the trace minerals etc by, mixing RO with treated tap water. so....

Question 1, will this work as I think it should?

Question 2, if I'm mixing the two 50/50, am I reducing the hardness by half? Is it that simple?

Thoughts and ideas welcomed  ;D

Title: Re: Water chemistry alteration.
Post by: Sue on September 29, 2021, 06:50:10 PM

Q1 - yes
Q2 - hardness is a linear measurement, so 50:50 reduce your 14 dH to 7; 25:75 tap:RO will reduce it to 3.5.



14 dH isn't too bad, some places it's 20+  :o