Saber

Forgot to say you can use a fresh water ph test kit from a pet store that sells tropical fish. It should use a ph range of 6.0 to 7.6 typically. Test your tap water first you would like the ph to be between 6.0 to 6.5 for soil grows if it is too high you can use a few drops of white vinegar or lemon juice (acidic) to lower it. To raise it you can use Sodium bicarbonate but use it sparingly excess sodium is not good for plants. Also if your water has chlorine in it leave it out in a bucket overnight stirring it several times for the chlorine to gas off.

The one plant that's really yellow looks like the leaves are drooping down a bit it is a sign of over watering. The root system is still very small for the size of the pot. More than likely the lower and middle of the pot is still wet when the top starts to dry out. If you lift the pot you can get an idea of how heavy or light it is to help give you an idea when to water. Let them dry out a bit more than usual then stick your finger into the soil up to your first knuckle to see if it is dry. Using both of these ways to gauge when to water. If the soil is too wet the roots can't pull in nutrients properly. Everyone is guilty of over watering at some point or another.

As they started flowering you should also give flowering nutrition from now on, at best you follow your feed chart for your nutes. Let´s hope they will stretch during flower.

@Saber, Yes you can use your bloom nutrients. What were you able to come up with for nutes? What is the N-P-K of the nutes? I see your still struggling with heat issues. I guess when it's over 100 F outside it's not helping you out much even running an air conditioner. I would suggest only running your lights on 18 hours a day and 6 hours off. Try changing the time on during the coolest part of the night and off during the hottest time of day. They will like having a bit of rest and this could allow them to cool down. It would be nice to have a 7 F to 10 F day night temperature drop your at 5 F which is bare minimal.Keep in mind that if you are using a HPS high pressure sodium bulb they put out more infrared light which will cause the leaf temperature to be 8- 10 degrees higher than the room temperature which can stress them out a lot.It is very possible the leaf temperature is close to 90 F. The reason you want lower temperatures and proper humidity levels is it will cause the leaves to open their stoma located under the leaves when the lights are on. The stoma take in Co2 to create photosynthesis activity. If leaf temperatures are too high and the humidity too low the stoma will close which will also slow down how much water and nutrients can be pulled through the roots. This translates into your having "Leaf Vapor Pressure Deficit" issues. At those temperatures you would need a very high humidity level which would be bad for the buds and cause mold issues. These heat issues will simply cause smaller loose looking buds and it can burn off terpenes effecting the smell, taste and potency of the bud. You have some very difficult growing conditions to deal with. Some tropical/desert growers take a break and grow during the cooler seasons to maximize their grows. Good luck I will continue checking in on you.

Looking a little closer I think you may have spider mites.... I have no experience with these and it looks pretty infested tbh

Nice work!!

@Saber Hi there my friend I put an answer in for your grow question Hope it helps you 👍

Hey there, hope i answered your question, since you're already so far along there's not much else you can do just give them flower nutes and get those temperatures down if you can, anything else you need, just let me know 👊

The N-P-K on the fertilizer is not really ideal but it's better than nothing. I would cut back on the amount just use 1/3-1/2 strength. The amount of phosphorus is very high and could be locking out other nutrients like manganese, magnesium etc. When the plants are flowering they like a bit more calcium, magnesium and potassium. Natural sources are unsulfured molasses if you can find it where you are. 1 tablespoon per gallon of water.

Looks like you have a pest issue my friend - try using bacillus thuringiensis

@Philindicus, thank you so much.i will do what I can and say the results.

@Saber, I see your in Iran. It would probably be difficult to get these commercial nutrients to your country. You may have to go organic on your next grow and try to make your own "Super soil". But for now if there is a garden store or farmers supply store you may be able to find some fish emulsion fertilizer and or seaweed fertilizer or sometimes it comes mixed together I'm not sure how to say it in Farsi. If it is available use it at 1/4 dose the first few times to see if she greens up it has more nitrogen (N) than phosphorus (P) and potassium(K). Fertilizers usually list N-P-K ratios. The following are ideals. For seedlings 2-1-2 . For vegetative growth (once you see 5 bladed leaves) 4-2-3. Late veg 7-5-5. Early bloom 5-10-7 Mid/late bloom 3-10-10. Late bloom 0-3-3 Last 2 weeks flush. There are a lot of opinions in regards to NPK ratios. You have to find what works best for you. When growing auto flower you need to start them with 1/4 strength nutrients and slowly work your way up to higher doses. Typically during the mid/late point of bloom you will be using about a maximum of 1/2 strength nutrients. If you cant find a variety of npk nutrients you can just go with a balanced fertilizer which would be 5-5-5 or 10-10-10 and try to dilute it down to the range you need. Lastly you can use animal manure like composted chicken,cow,goat, bat guano, etc. you need to be careful because they are usually high in nitrogen and can burn your plants roots. There are recipes on the internet to make your own soils and organic teas (liquid fertilizer) good luck I hope this helps and gives you a few ideas. I wish this site would show where people are from so growers in your area can tell you where to find supplies.

@@lilbp420, thanks for helping me ,I can't find the nutes here in Iran ,can you say what type of nutes are them or what should I add to them to make them Healthy?

@Saber, yes looks like you starting to flower. Really we could use a bit more information on what your feeding to make better calls. @philindicus has hit the major points, you'll do better checking the Ph and TDS of your water, then adding nutes to keep from over feeding, but right now it I would give a healthy dose of Micro + Bloom and a bit of Gro too. How much would be hard for me to say given the unknowns.

@Philindicus, thanks for helping,I don't have PH meter ,I ask someone here and say it's because of poor light ,and someone else sayed it's because of poor soil,and I confused for them .

I agree they are stunted. It looks like they need more nutrients because the lower leaves are turning yellow.I'm going to say nitrogen and maybe phosporus right now.. What kind of fertilize and how much/often are you using it? They are definately starting to bloom you will problably wind up with one small main cola with a few smaller buds around the lower areas but don't write them off. I've seen some crazy red solocup weed grows with some really nice buds. Also are you using a ph meter? What is your water ph your putting into her pots? Even though they are in bigger pots the roots will never grow to fill the pot so you still need to watch how much you are watering them what will happen is the top of the pot will dry out but the bottom will stay wet/ moist. If your trying to keep things simple some folks are using one part feeds like maxibloom Megacrop etc. Along with recharge for beneficial microbes.They seem to have good luck using this regime.