Yea, good old Edward, claims things, never seems to try them. Claims other methods, ranges and rates are bad merely because he is unable to achieve success. It's not a method's fault, it's your fault.


I tried inducing the Mg+ with R wallichii, at 20ppm of so and low Ca, around 10ppm, the R wallichii still grew quite nicely.........so it's it what he claimed?
I do not see how it can be that solely.
Or Mg/Ca blocking.

We really do not see that nor have evidence of that in an aquatic water column system. That is the system that matters.

I really start to question folks when I repeat their claimed ranges.rates and cannot reproduce them.

Shalu's explaination is best.

For CaSO4*2H2O and MgSO4*7H2O, just shoot for about 3:1 ratio Ca:Mg, and about 1-2 degrees extra GH booster or about 15ppm:5ppm.

That's plenty of Ca/Mg for aquatic plants for a week and does not include other potential sources such as fish waste/CaCO3 rock/Tapwater/TMG etc.

Regards,
Tom Barr