Your plants look like they are healthy and growing. The root tabs are probably helping with that. They have a balanced mix of Nitrates, Phosphates, and Potassium. Some plants will do better with those than others though. The Leaf Zone only has Potassium in it. While you will probably get some Nitrates and Phosphates from your fish food and fish waste, it may or may not be enough. The Co2 booster provides some carbon, which is also needed by plants. It's good to add some of this if you are not planning on adding true Co2.
My advice would be to keep doing what you are doing for now, as everything looks like it is doing well. In the meantime do some research about diy dry ferts and a dosing method like EI or PPS. There are lots of posts and resources here about them. Dry ferts are by far the most economical way to fertilize a tank. Then when you run out of what you have, you can try switching if you feel comfortable. And if you have any questions about anything, just create a thread and ask.
My advice would be to keep doing what you are doing for now, as everything looks like it is doing well. In the meantime do some research about diy dry ferts and a dosing method like EI or PPS. There are lots of posts and resources here about them. Dry ferts are by far the most economical way to fertilize a tank. Then when you run out of what you have, you can try switching if you feel comfortable. And if you have any questions about anything, just create a thread and ask.
