My Hardness Values
I have had a problem with older leaves getting algae and/or falling off. Aside from telling me to increase co2, the other reason I've heard of this happening is possibly a deficiency in Ca or Mg. I was able to get the following readings from the water plant:
Average 38 mg/l Ca
12 mg/l Mg
Is this enough of these nutrients to prevent deficiency? The info I've seen only gives degrees hardness in GH.
(As an aside, I was suprised to learn the water averages 1.9 mg/l PO4!!!)