House & Garden nutrient calculator broken?

[logic]

Soon as i select "Aarde A & B" from the drop down menu it dont work. The only one that works is Bio 1 Component Aarde

i just get it displaying "NULL" does this happen for everyone else?

 

[Boywonder]

I tried and got same result.

 

[w00dy]

Same here.

 

[theherbalizor]

it goes to null if you change any of the settings.

TBH, a bit pointless. Most additives are 1ml / L. The base you can work out your self. Really simple line. LOVE IT.

 

[hazyfontazy]

its best to use an ec metre ,the calculator is just a guideline ,