I just packaged a number of Sta green Polymere coated fertilizer pellets in 00 capsules. These caps work great providing my plants with plenty of juice. The N,P,K numbers are as follows: 19-6-12 respectively.

Same thing as Osmocote only less expensive!

Inexpensive fertilizer that works great in an aquarium environment. 

The picture I provided of the aquarium is for display purposes only. I added the picture to show how well the fertilizer works. As you can see my aquarium is doing very well.

Thanks for looking