Weeding cake

The yellowing is most likely to be light or lack of nutrition.Really need more info to have a better guess as you can'tr always be shaw.It says outdoor room type but its clearly in a tent,lol.A common problem with led,s is bleaching due to the leaf temp being too low.When your plants get close to led,s 30-45cm they want to be over 27 but Iv read they can be as low as 24 if the light isn't too close.There's a lot of whats called bro science with the herb and Iv seen more than 1 wrong comment in the last wk so always google any answer given,mine inclkuded as it wouldn't be the first mistake Iv made.

It’s a calcium deficiency. Although you may be feeding it calcium, the calcium is likely locked out due to ph being off or another nutrient (k) is too high,thus locking out the calcium. It’s not the light being too close, the tips would have curled up if the light was too close. Good luck with your grow.

I always use guano during flower,itsmostly in brewing compost tea as it s one of the things that really helps with taste and smell.The old saying goes,without the bat the taste is flat.That sounds like some mix.You have to be careful as certain nutrients react badly with each other,too much of 1 will lock out another.Plagron powder with super and promix,I guess they're synthetic mutrients and not organic?.There's certainly something to be said for the KISS saying,Keep It Simple Stupid.Iv been at it for decades and got into throwing everything at it including the kichen sink and a lot of the timne it creates problemns.For the most part they are simple plants that do really well on very little as I'm sure you're aware.I'm going back to all organics again.Advanced Nutrients Iguana Juice grows plants as big as synthetic mnutes do.Its better for and the environment,and nothing beats organicaly grown herb,it smells and tastes so much better.

Microbes and sugar wouldn't do any harm.Elaine Ingham is the OG of soil science,she's made all the improtant discoveries in soil science in the last 40yrs.Amazing You tube posts.The soil food web is certainly something you want to know about if you're into organics.I like the liquid organics,advanced nutriants "Iguana Juice" to be specific.Its not cheap but its by far the best.Their web site is a must.So elaine ingham says molasses,sugars aren't that good to feed microbes.They eat in in days,she says fish hydroslate is the best and its 1 of the many ingrediants in iguana juice.Iv been using mostly advanced for over 10yrs.Its the only 1 developed with cannabis plants some have copied but most food is based on the tomato plant and ours clearly has different growth pattens.

The micobes will love that fish mix more than sugar.You've smelt it haven't you?Its certainly not what you'd want if your tent was in your bedroom,lol.

Any time.

Good luck and happy growing! 😁

Happy growing 💚