Magnesium Sulphate

[Jaap]

Hi

I am not sure if my tap water contains enough or any magnesium. I bought some Epsom salts and was wondering if too much of this will cause problems to fish or plants. I am asking this because if my tap water contains magnesium and I add more I might doing more wrong than right.

Also maybe this will help with my plants to become greener?

Thanks

 

[ian_m]

Nope, you can't really overdose in Mg.

If UK based, you are unlikely to have too much Mg in your water.

Anyway magnesium sulphate is cheap, so unless you know the exact ppm of Mg from your water, just dose magnesium sulphate as per EI.

If you do decide to ignore advice given, these are magnesium deficiency symptoms.
http://www.ukaps.org/forum/threads/question-on-increasing-ferts.34466/

 

[Jaap]

I started adding Mr via Epsom salts so let's see if my plants get any greener...especially the phoenix moss which is dark green...