Due to my rocks, my calcium is 100ppm and magnesium is 8.7ppm. Is this ok?
My rocks give off a ton of calcium. Gh is 16, calcium is 14 of that. They are gray with layers of flat white throughout them. I need to manually add magnesium to get any. I can't add GH boost since it adds even more calcium.
Is 100:8.7 ppm ratio OK? Do plants need a certain ratio to take up magnesium well? On a plus side, there is at least one amano molt almost every day (12 in the tank).