Brown Spots, Yellowing taco shell leaves.

Basically as it suggests I am having brown spots with yellowing leaves. Some doing the taco shell. Im using Lucas formula at 5 micro 10 bloom and bumped the calmag up to 6ml per gallon suspecting a calmag deficiency from RO water. My water/nute ph is 5.7 going in (Have not checked run off). I thought the taco leaves where from a possible over water so allowed the soil to dry out for a couple days, then a nute watering after using just straight ph'd RO water for the previous 2 waterings (before the dry out). Im using Promix HP with added perlite. Its been a couple days since the Feeding and the plants are not showing strong signs of improvement. I suspect perhaps a PH issue being to low or to much swing. I checked very thoroughly for signs of bugs nothing that suggest any sort of mite ect. I used this same ratio on there parent plants and they did great. Any help is appreciated and thanks for your time.








Bonus of the happy mothers

That looks an awful lot like fungus gnat damage, but I’m a newb

looks like overwatering which could then lead to fungus gnats.

Toss my dog in with root zone issues like rot, nute lock or hostile nematodes, gnats, black spot fungus etc.

All kinds of sheet going on with those.

Hydroguard is your friend.

Ca:mg religiously.

pH 5.8-6.275 is a safe range to bounce in soil less.

Those may never come back right. That dark purple stem is troubling.

They will act differently under led vs hps/mh too.

Hey an update! I really did not believe it was bugs after a very thorough look and talking to people who have had bug problems in the past. So I flushed the girls with about 1.5 gallons each (3 gallon pot) with a higher ph water 6.7 with 6 mg of calmag added, waited 3 days for soil to dry out and added a full dose of nutrients (Micro 8ml, Bloom 16ml, Calmag 6ml). Within 2 days I noticed a lot of new healthy growth. The girls seem to be doing fine and will get to live now!



Don't mind the blue I shut off the bloom side being cautious as I also suspected light burn, will turn it back on today. You can see see a small amount of the old unhealthy growth (Bottom right was worst plant) but everything new is about where I want it. Thanks for your guys help and hopefully this post will help future growers as well.