Horticulture ferts safe for aquatic use?
My friend who is in the horticulture business gave me a pack of Nutricote - Controlled Release Fertilizer. Though I can see very good results in his orchids and ornamentals, I'm curious if it is safe for aquatic use?
I searched somehow with regards the subject, found a post in the Krib but with a limited answer (doesn't satisfy me).
I wonder if anyone of you use this kind (or somehow the same) fert in your planted tank?
Thanks in advance.
p.s. got 2 tanks to test this on if this is "aquatic safe"; soil based and gravel based substrate tanks.