Need a quick opinion. Nute burn related

These ladies are a little over a month old, I fed them 20-20-20 nutes a couple times about 2 weeks ago, and after I noticed yellowing, I've just been giving them straight water. Most of the new growths are green and healthy looking, but some of the lower fan leaves have REALLY yellowed, but they haven't browned too bad..

I had heard "if its yellow, let it mellow" lol so just curious what you guys think.

Thanks alot. Humidity is sitting at about 45%

Keep feeding clean water, if its nutrient burn, the clean water will wash out the build up.

JP

Honestly, it looks like N & S deficiencies...
do you know the PH and EC or PPM value of your medium and or the water which was mixed and used to feed?

baggednismo said:

Honestly, it looks like N & S deficiencies...
do you know the PH and EC or PPM value of your medium and or the water which was mixed and used to feed?

Click to expand...

Hmm, I might need to invest in a GOOD PH/PPM meter, I just have one of those shitty prong meters, I dont even know if its reading it properly. I've been using tap water, but I've been letting it sit out open for about 2 days before I use it. I had only fed about 2/3 times a couple weeks ago, when they started turning yellow I cut out the nutes. I think I mixed it a little strong, (the recommended dose when I should of halved it). I am just using 20-20-20 plant food, basic stuff.

Im curious, if I fed, then stopped feeding, would the yellow just be from LACK of nutes? I just don't know how to tell the difference between nute burn and nute deficiency.