hardened substrate? cause?

[StirCrazy]

Originally Posted by danny zubot

Steve, I think you might be confusing Alk with carbonate hardness. Where KH is fine at 9.6, Alk is too high IMO. I try to keep my Alk at about 3.5 Meq/L or 12.25 dKH.

nope but you are confusing me now normal peramiter are 2.3 Meq/l or 8dkh, I aim for 12 to 13 dkh for mine also and this is why I am saying with a level of only 9.6dkh or 2.74 Meq/l his alk level is not causing the substrate to lock up.. now what are you trying to say?

Steve