Siamese White Widows

I have a couple of white widow plants that grew together from seeds. It has been in veg for about 4 weeks. The leaves on bottom are starting to yellow. I looked iit up and found that its either ph or nitrogen. My ph meter reads 6.9 to 7.0 ph. I have been using a ph down to get the ph down. I flush the soil with 12-14 gallons of water around 6.5 ph. Within a few hours the ph is back up to 7.0. I assume its because I am using the miracle grow soil. Anyway bottom leaves are starting to look pretty rough. Yellowing leaves with green veins. White holes are starting to appear on the bottom leaves.

I use only mg products and have for many years......I would guess calcium or your misting your plants and they are burning I would also suggest any yellow in in leaf margins (space between the veins) is caused by magnesium.. are you by chance using ro or distilled water? Either way I suggest some calmag and if your foliar feeding don't do it with the lights on

First pic also looks pretty yellow, how often are you feeding and how much.. I would give half tsp of nutes per gallon if your not using any and a full tsp if you already are ( note this is for mg feeding, bloom booster ect)


I also just saw you said you flushed with 12-14 gallons of water?? Are you being serious? I don't flush my plants but I have and that size pot would be fine with half a gallon........I'm now thinking a lot of your problems are due to over watering. Which causes dry crunchy leaves that yellow from bottom up and from the center tip leaf outward


Overall they look good

Oh snap! I am misting the leaves. I have been watering every 7 days and feeding nutes 3 days after watering. Thank you for the pointers!

What do you recommend on keeping soil ph from immediately going back up?

Honestly I don't ph... not saying its not important though.

I use equal parts perlite to mg allowing better drainage and letting me water every day,much easier to keep ph and deficiencies in check this way. the only thing I can suggest is drop the ph slightly. Some people like their ph to swing so they can pick up the nutes that are better absorbed at a lower ph. It should rise again and your plants will be all good... I'm not anexpert in this specific area but not having to much runoff as well as urea vs ammonical nitrogen can lower ph

Sweet! I picked up the general organic go box today at the store. From what I hear it will solve my ph and mg issue. The plant already seems less yellow .