That’s awesome. I just set up a fluval flex 15 as well. I used dwarf sag, Java fern, Christmas moss, bolbitus, moss balls,and Anubius. Have some riccia floating and well. Only planted for about 5 weeks. Seems to be doing ok. I use easy green once a week and potassium as my ferns seem to do better in my other set ups. What do you think of the light? I am Thinking maybe changing the hood and getting 12 inch coop light.