root tab?

[lampro]

I just bought gelatine capsule and I dont know which fertilizer should I add in the capsule for my planted tank. Any suggestion would be really helpful. Should I add this one?

 

[Autumnsky]

The kind I used about 8 years ago changed and I am not sure which, I know a few members use their own / DIY versions. Maybe one will pop in here.

 

[Brookster123]

You can use that osmocote, only a few beads per capsule, its strong. I used to pack the capsules with iron/clay powder and osmocote plus.