Yellowing with speckled brown spots- 4 weeks veg

Hello, I have devolped a major issue with my plants 4 weeks into veg. Temps are 25 celcius and using 400 W of actual CFLs lighting. I have been watering with britia filtered water, and used pre fertilised plagron soil for 3 weeks, no no nutes. Cannot test PH as of yet, as the meter I ordered was screwed up


Here are some piccys.

You can guess all day, but without the pH reading, you are only guessing and could make the situation much worse.
My guess is (K) Pottasium defeciency. But I would not do a thing until you check the soil pH. Good Luck!

alot of water filters out there remove most of the "bad" stuff from water, but they can also remove some of the helpful minerals and what-not... Thats why people with RO filters need to add some extra cal-mag, or so I've heard.

without knowing exact pH, you could be at the beginning of "lock-out"... where a specific mineral can't be absorbed by the plant because the pH is way too out of whack.

... And I am a practicing Rastafari... whats up with your screen name?

Hello, and may i add my 2 cents, to me looks like you are suffering from some of the most common veg nutrient deficiencies, 1) Being Nitrogen, most common symptom is the yellowing of the bottom leaves) 2) those brown spots are Phosphorus, which is noticed also on the older leaves first then on new growth which is also stunted. so just get ya ladies a good base nute for veg with good N-P-K levels an all shall be well. but hurry. could effect your final outcome of your meds if shes stressed to much.