These are the DIY fertilizers I use for most of my planted tanks. These are packaged in easy-to-use, refillable, pump bottles to make dosing accurate and simple. Instructions included.

Includes both pictured 250 mL bottles containing macro and micro nutrients.  These use the PPS-pro system, and a bottle is enough to fertilize a 10 gallon tank for a year or longer.

More information at the GLA link below, if you're curious.