Planted Tank Guru
Join Date: Nov 2009
Location: Missouri united states
Growth in NON CO2 tanks is in my experience ,measured in week's/month's.
I would want to see something in the way of nitrate's which is key macronutrient.
Were it me,,I might add a root tab under each sword plant for they are nutrient hog's and increase flourish comprehensive to twice a week.
Appear's to be a smaller tank, so the use of Seachem's EXCEL would not bee too expensive long term and would provide the plant's with some carbon (liquid CO2).
Alternative might be to purchase macro/micro package of the dry fertz from Aquariumfertilizer.com and dose as directed while feeding fish once a day.
This would allow you to do away with the flourish comprehensive and the macro/micro mix will provide all nutrient's cept phosphate (another key macronutrient), which you can supply by simply feeding the fish each day.
Macro/micro mix could last a year or more .
I run a 20 gal shrimp tank just this way.
P.S. Most sword plant's will easily overrun/get to big for the tank in photo but it will take a while.
OOP's, just saw where you ARE using EXCEl= good.
Just need to provide a little of all nutrient's.
Flourish comprehensive is mostly trace mineral's or micro nutrient's by %.(and water)