Tip #2
Nutrients: There are 3 main components to plant fertilizers; Nitrogen (N), Phosphorous (P), and Potassium (K). Depending on what stage of growth your marijuana is in, determines the nutrients your plants will uptake. If you use in-water nutrients, be careful of how much and how often you feed them… reading the label could help prevent harm to your plants.

for young plants (snow white) what is the nutrients they need extra??
Snow white eh? yummy. Its really common to see yellowing leaves or leaves turning from dark to light as the Nitrogen becomes deficient. You need a lot of (N)Nitrogen throughout the vegging stage. Anything around a 10:6:8 ratio or so is fine. Its kind of a balancing act as too much Nitrogen can really damage your plants. Watch for damage at the tips of the new growth and if you notice a “burning” effect flush your plants.
At the flowering stage you’ll wanna ease up on the (N) and increase the Phosphorus. You’ll also need some Magnesium (epson salt) most likely. Look for a fertilizer around 4:8:10.
General Hydroponics Flora series is pretty easy and really good if i may suggest. You kinda need a system. “Winging it” is not a great method cuz if you don’t know what your feeding, how will you know how to correct any problems or what causing it????