Nutrient recommendation

[Bluey]

You won't know unless you measure it but would be around the 75w mark.

What is more important is the spectrum and the diode efficacy. I'm guessing;its terrible and not where you need it.

The new LED lights made nowdays are fantastic. Most of the lights are pretty much the same spectrum, HLG are heavier in red spectrum which gives them a higher efficiency. They are great lights but you really pay a premium for them.

 

[Rootsruler]

You want a full spectrum light that uses between 140w and 220w for your 2 x 2.

Cannabis requires Nitrogen, Phosphorous and Potassium as their main ions. Other micro nutrients are also needed for peak health. If you are growing under LED you will need to add some calcium and magnesium as part of your fertilizer routine.

I use an all in one product from a company called General Hydroponics. I use their Floranova line. The nutrient makeup is 7-4-10 for their vegetative base and 4-8-7 for their bloom base. If you can find a liquid or powdered nutrient comparable to these ratios at your local garden center I would use those. Calcium and magnesium can be bought at your local drug store. Calcium pills crushed up into powder and added into your water will work. Unscented Epsom Salts will take care of your magnesium needs. 1 teaspoon per gallon.

 

[Rootsruler]

I like to post this for those that aren't sure what to give their plants when.