Yescom 129 Multi-Color LED Aquarium Light Extendable Full Spectrum Lamp For 36"-43inches Fish Tank
NICREW SkyLED Aquarium Light for Planted Tanks, Full Spectrum Freshwater Fish Tank Light, 30 to 36-Inch, 15W
See these threads regarding your lights:
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I’m not familiar with them, but the NICREW looks like it is a little weak, which may be good for a low-tech setup (no injected CO2), which is what you have. The Yescom, however, may be too strong. If you have too much light, and not enough CO2, you can over-drive the plants and ‘burn them out’ in a way.
I’ll let at @jeffkrol
comment on the lights, as he is our resident expert in this area.
How long should I have my lights on for?
Start with 4-5 hours for a few weeks, once you make changes to your dosing regimen. It will take at least that long to notice any improvement.
I'm using the root tabs and Seachem Flourish right now.
Root tabs are unnecessary, since everything can be supplied in the water column.
What are Macros? And is there an easy solution to put something in the tank to add them?
Macros are the three primary fertilizers: nitrogen-phosphorus-potassium (N-P-K). While the Flourish has some in it, it is usually not nearly enough. This is why it would be helpful to know what your NO3 and PO4 test results are. Additionally there are other nutrients that should be tested, as they are important as well. These are calcium and magnesium and we can see them in the GH test kits.
Before you run out and buy a bunch of fertilizers, it would be best to know what you currently have in your tank so that we can suggest the best options for you. If you need a list of test kits, these are my favorites:
NO3: Salifert (good precision in the 5-20 ppm range and easy to use)
PO4 (<=3 ppm): Salifert
PO4 (>3 ppm) : API
K: Easy-Life Potassium (good precision in the 5-15 ppm range)
GH/KH: API (for levels <2 dGH /KH, use 5x the water, then divide results by 5)
I do think you would benefit by adding Flourish Excel or NilocG Enhance immediately. These are not fertilizers in the standard sense. They are carbon supplements which can be very effective in low-tech tanks.
Also, I have a smaller, 10 gallon tank and the plants in there are doing amazing.
I’m guessing that your 10 gal may be doing better because the fish will produce (via feeding them) nitrogen and phosphorus and your larger tank may not have enough of a fish load to do it. Plus, the 10 gal may have other aspects that are coming together better, such as light, circulation, etc.
Be sure to provide info requested earlier on the other attributes. The whole picture is important.