High dhk please help

[Donaldf973]

I bought a container of Aquaforest reef salt from fostersmith this past November and I'm on my 4th water change and noticed my sps went on a decline and bleached some died since I started using this salt. I bought an API kh kit and it said kh was 12-13. So I went to 2 local pet stores and both used 2 different tests and got the same results. The certificate that comes with the salt said the batch is from Jan 2016 and 7.7dkh.

Anyway to fix this?

 

[Anirban]

Which kits they exactly used? What are your other parameters Ca, Mg, NO3 and PO4? Which light you use and intensity if LED.

 

[Donaldf973]

Tests were a mix of red sea pro kits and a Hannah alk meter. Calcium around 410-420, mag 1350, phos 0.03 and no3 around 10. Coral Compulsion 24w 20k led no optics 3 inches from surface on an 11 inch tall tank.

 

[Donaldf973]

So error on my part I was using regular filtered water instead of distilled or rodi. I bought distilled water today tested and it came out to 8 dkh so faults on me.

 

[Frop]

So error on my part I was using regular filtered water instead of distilled or rodi. I bought distilled water today tested and it came out to 8 dkh so faults on me.

Glad you got it figured out. Thanks for sharing.