Thanks for the feedback! I'm dosing with Florish but I'm just figuring out the right dosing schedule with the light I have. I think my issue with the frogbit has been too much light but not enough ferts. I was just dosing during water changes, which I do twice a week. Upped that to everyday just before I turn on the light. Now I've got some new leaves on what's left so I think I've found a happy place between the ferts and lighting. *fingers crossed* The rest of the plants are doing very well.
I suffer from MTS...and enjoy every minute