I never heard of a stem plant that needed a root tab to grow healthy.
There are no plants in our tanks that require or need root tabs. If you dosing the water column completely they are not needed to grow healthy plants. All you need to do is look at some of the tanks here on TPT that grow healthy plants in inert sand without root tabs.
If you not dosing the water column then yes they are helpful, otherwise most likely redundant and not necessary.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.