I have a question regarding GH and dosing Mg and Ca. Is anyone using either Seachem's or Kent's GH+? I checked Kent's website to see if they gave ratio of Ca to Mg. the MSDS link, http://www.kentmarine.com/msds/BOTANICA_GH.PDF shows < 20% for each component, which I take to mean that their solution is variable.
I have both these chems available separately, but wanted to use up the rest of the 2L container. I go through about 100ml per week after w/c for my 90G for a GH of about 5 dKH.
I know we're looking to sustain a 4:1 ratio, Ca to Mg, but I don't remember reading why. I know some people add MgSO4 to their CSM+B mix, doesn't this change the 4:1 ratio and do they then add back Calcium?
I'm not worried about maintaining a steady dGH, knowing it can go up some without any problems, but I would like to get a handle on how to dose these two cations during the rest of the week. Also, if anyone has any "tricks" to dissolving calcium, please let us know! I have been thinking about gettting a stir plate, perhaps even with heat, to have it all mixing without having to attend to it. Thanks.
If your responses could reference dGH instead of ppm that would be great.
I have both these chems available separately, but wanted to use up the rest of the 2L container. I go through about 100ml per week after w/c for my 90G for a GH of about 5 dKH.
I know we're looking to sustain a 4:1 ratio, Ca to Mg, but I don't remember reading why. I know some people add MgSO4 to their CSM+B mix, doesn't this change the 4:1 ratio and do they then add back Calcium?
I'm not worried about maintaining a steady dGH, knowing it can go up some without any problems, but I would like to get a handle on how to dose these two cations during the rest of the week. Also, if anyone has any "tricks" to dissolving calcium, please let us know! I have been thinking about gettting a stir plate, perhaps even with heat, to have it all mixing without having to attend to it. Thanks.
If your responses could reference dGH instead of ppm that would be great.