Epsom salt in planted tank

[diamonddiscus08]

That's the only time it is needed? What about for planted tanks? I thought I had read it may help with the nutrients.

[Dissident]

That's the only time it is needed? What about for planted tanks? I thought I had read it may help with the nutrients.

In a 55gal with highlight and CO2 you should be adding ~18grams of MgSO4 after each water change. A magnesium deficiency will show itself on older leaves by, Yellow spots, Often appears similar to iron deficiency since mg deficiency prevents a plant from properly using iron. Yellowing of old leaves starting from edges while major veins remain green.

I dose 40grams (2.47 tablespoons) weekly in my 110gal discus tank and never have had a problem.