I have a 20 gallon tank with some Java moss, hornwort, Anubias and Java fern in it. For a light I use a finnex. I started with just dosing flourish excel but switched to using thrive c after learning flourish excel didn’t have all the nutrients plants need. I add only one ML in the tank because of the high nitrates but I used to dose 2. Nothing seems to be growing, especially the hornwort which shed and hasn’t recovered any needles. Everything looks green and healthy but it’s just not growing. Is more thrive c needed or could it be something else? And if I need to add more thrive c will I need to do more then one water change?