Jump to content

Help with high GH.

Queen Willow

Recommended Posts

I'm just figuring out GH & KH and could use some direction. 

With the API Test Kit I have a KH of 5 and GH of 25. Which, if I'm right, means I have super hard water. 

What does that mean for keeping fish?  I believe it means shrimp are out of the question.

I have fish now that are fine, but going forward do I need to adjust it at all? Use distilled or RO water? How would either of those affect my KG? How would a water softener (for the whole house) affect fish keeping? 

Generally, what do I need to know or do any this high GH?


Link to comment
Share on other sites

If you would like me to go into detail about water chemistry and how it works I can, but for now I am going to leave it simply ( I am really starting to think I need to make a video on water chemistry as it pertains to fishkeeping). Fish that prefer softer water may be picky about your gH most do not mind or prefer a higher gH. 


Fish you would have to modify your water parameters would include; some tetra, discus, some south american and central american cichlids, etc.


Fish that like high gH would include; goldfish, livebearers, and african cichlids


If you find that hard water is a nuisance to not only your fish, but to you as well I would recommend picking up a filter for the whole house. It certainly makes washing cars at home unmanageable. Otherwise I wouldn't worry to much about it and just avoid fish that prefer low pH water.

  • Thanks 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Create New...