A good kh???

[DMunoz84]

Hello AA friends!! I'm looking for a bit of help with my KH levels. Specifically what should my KH be? I have a moderate number of plants with a few fish. My tank is high tech highlight 75g with a pH controller set to 7.0 lights are on 7 hours a day. Weekly water changes if not even more frequent than that so the tank has been at 12 KH. I have found very little on the Internet but from what I can see they recommend 3-8 KH. Is that where I should be??? I did find this I thought was interesting?

 

[Keke89]

Very interesting to have found this post, I have also started testing my gh and kh, not really knowing where it should actually be?

Hope you get a response soon.

 

[Rivercats]

Kh and Gh in a planted tank needs to be 4 or above to ensure plants have enough magnesium and calcium available.

 

[Old Scales]

I'm no biologist or chemist but from all the people's posts here in AA over the last year seems to show that as long as your KH is above 4 and below 20, all but a few of the most sensitive fish adjust and live just fine. Swinging pH and KH around all the time trying to hit a perfect number is harder on the fish. GH usually follows KH as far as I can tell. It seems to have an even wider range before it affects fish. Our AA partner, Threnjen, is more knowledgable about GH and TDS than I am. Hopefully she can chime in and shed some of her info. Hope this helps, OS.

 

[DMunoz84]

Sweet thanks ? I hope she sees that because I asked her first lmao!!

 

[DMunoz84]

Chart again with no page number in the way