CaNO3

PK1

Guru Class Expert
Oct 7, 2005
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Has anyone ever used CaNO3 (I think it's actually Ca(NO3)2 ) to supply NO3 and Ca at the same time? I would be curious to know how it works and what it does to GH or KH.
 

Tom Barr

Founder
Staff member
Administrator
Jan 23, 2005
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Re: CaNO3

It only affects GH.
Folks have used it, although not extensively for well over 10 years.
Most use CaSO4 or CaCl2/MgSO4 for GH and KNO3 for NO3.

Regards,
Tom Barr
 
F

fishface

Guest
Re: CaNO3

is there any prrobs with the Cl part of CaCl2? i heard it's not good for a planted tank.
 

PK1

Guru Class Expert
Oct 7, 2005
154
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16
Pennsylvania
Re: CaNO3

I know people have used it but I have no feedback on it. I may give it a try myself at some point, do you know what % is Ca vs. NO3 so I can calculate the doses?
 

Tom Barr

Founder
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Jan 23, 2005
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Re: CaNO3

It might cause subtle issues in soft waters.
But CaCl2 never seemed to be an issue.

You could say the same thing about KCL which folks have a long history of using liberally.

Still, K2SO4, CaSO4 work well and dissolve slower, but not that much slower to be an issue.

Regards,
Tom Barr