Are Liquid Fertilizers Worth Buying?
So my question focuses primarily on liquid carbon fertilizers, such as Flourish Excel, and "All in one" style liquid fertilizers, such as Aquarium Co-op's Easy Green. So first off, I have a 5 gallon tank with eco complete and an 8 watt, 6500ish K LED (I don't know the exact specs, but it came with my aquatop pices 5 gallon rimless bullet shaped tank). The plants I have are Abubias Nana Petite, S. repens, and rotala macranda narrow leaf. I don't use any form of CO2, but there are currently DIY osmocote root tabs in my tank. I do not plan on getting pressurized CO2 because I'm a student, and there isn't anywhere near me where I can get a CO2 tank refilled, so I was wondering if it would be worth using a liquid carbon source? In other words, would I see any significant change in growth from using something like Flourish Excel in my tank? Further, I know that plants absorb the majority of their nutrients through their roots, and since I am already using root tabs, would it be necessary to get an all-in-one liquid fertilizer?