plant food

Here's a link to the All-In-One plant food calculator that will show you how to make your own plant food similar to the more expensive brand names. If you get stuck with the calc, you can ask questions here,   Ta

So three of my tanks have live plants in them. Theyre all tropical tanks with a heater, filter, etc. My substrate is sand in two and half sand half gravel in the other. My plants are doing well except the one anubais in my 15g but im wondering what do you guys feed your plants? Do you use a...