Gh & Kh or just Kh?

I'm dosing flourish Excel and K and FE and other micronutrients...but not daily I think the algea likes these things too!

Plus Im scared to does the right amounts of iron with inverts in the tank.

I jsut want to stabalize my PH so I don't have a .5 PH swing every time I do a water change. my Tap water has a PH something over 7.5 out of the tap.

I guess i will remove the charcoal and try putting some Coral in there instead next time I change the filter element...hell I might just buy a canister and be done with it...

I thought the Cuttlebone would help, I'm not sure if it is....

Thanks for the help so far too.
 
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This is pretty cheap for both Kh and Gh (Aquarium Pharmaceuticals):
Kh & Gh Test Kit
 
hurricanejedi,
That is the kit I am using, only I paid $9...No Shipping charge though.
 
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