Join Date: Aug 2015
Location: Manitoba, Canada
Curious how others had to change fert regime with fluorite tank
I have a 75 gallon tank that's been up and running for about a year now. Substrate is black fluorite sand, lighting is a single Finnex Ray 2 so medium lighting.
When I started a year ago, all my plants seemed happy with my dry fert regime which consisted of enough potassium nitrate & potassium phosphate on Monday/Wednesday/Friday to keep nitrate levels around 20ppm and phosphate at 2-3 ppm. On Tues/Thurs/Sat I would add 5mL of Flourish Comp. 50% WC each Sunday.
Now, a year later, I am doing everything the same but my plants just aren't growing with the same vigour they once were. I'm hoping to get some advice as to what I should try changing. Increasing the dose of Flourish Comp maybe? Do you think my fluorite substrate was previous supplying something that has now petered out?