Help me week 7 of FLOWERING

I believe this is a phosphorus deficiency? Strawberry fields soil till soil nutes ran out. 5 gallon pots. i noticed 2 fungus gnats stuck to two colas Out of the whole garden so i sprayed BT and cut off my co2 week 6, and i fed twice every other day root cleaner also that week. Cyco nutrients suggest 5.5-5.8 for soil. I changed it to 6.2 week 6. My other plants in week 3 are starting to show shades of purple. At night the temp goes down to 60-65 but no less than 60. ppms at first were 1200 per instructions but figuring it was cookies i dropped it to 1000. My gorilla glues and gelatos aren't turning purple but are fairly smaller after you guys help me with this i can show pics of those. No mites no pm. No overwatering. sometimes they point downwards on the Every other day which is feeding day. (the most purple leafs)(In some of the images) The GG and gelato in week 6 have no purple really in one of the pics. However, the GG and gelatos in week 3 do just a bit in 1 of those pics. Also the leaves at the bottom end up turning brown and dying at the very bottom of the plant under the net. Advice on how to fix? I may have pics of the GG and Gelato that are smaller some purpling on some leaves and they are the only plants i found some fungus gnats dead on leaves stuck to trichomes. Lower bud sites look bear clawed down but if anything my plants the day they need to eat i get out there a tad too late and the start pointing downwards. Plus i use a soil moisture meter. Never had spraying issues in flower in 6 years. Fungus gnats are attracted to co2 grows. I killed the larva last week with two flushes of root cleaner spread apart. i put up yellow sticky traps on the lights. The nose smells great on the cookies but the gelato and gg ones that seem stunted from the gnats two weeks ago lost their nose. Not sure. advice on what to do and what you guys think? The plants with the purpling the cookies i was going to spray my phosphate on the big leaves but decided im actually going to focus on the stunted ones the gg and gelato with the spray.

the mid 5s are for Hydro growing.

In soil P will get locked out in the 5s according to "the chart"

however those leaves are not 'turning' purple.

they've turned purple.... adjust to ~6.5 for soil and see if things improve....

redivider said:

the mid 5s are for Hydro growing.

In soil P will get locked out in the 5s according to "the chart"

however those leaves are not 'turning' purple.

they've turned purple.... adjust to ~6.5 for soil and see if things improve....

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So 6.2 is too low and you suggest 6.5? What about any foilar spray?

I hadn't thought about it. give it a shot why not.

So apparently the day of feed I get out there too late when the lights cut on so now I’m feeding them in the dark the day of feed. My underwatering contributed to the lock out possibly.

You aren’t supposed to
Feed your plants before the lights go out. I would bump up your ph to 6.5 to 6.8 and see what happens . Your ph is way too low for slip and you’re probably Nute locked. Also, how many weeks does this flower for ? You should be somewhat close
To finishing it off. If that’s the case I’d just start giving them 6.5 plain water . Just me though .

You are positive they are fungus gnats and not root aphids?

Ant081702 said:

Fungus gnats are attracted to co2 grows..

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Fungus gnats are attracted to standing water.

Renfro said:

You are positive they are fungus gnats and not root aphids?


Fungus gnats are attracted to standing water.

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Could be both. I guess running a reservoir in my room so my nutrients are pre-made with air stone is a bad idea?

Renfro said:

You are positive they are fungus gnats and not root aphids?


Fungus gnats are attracted to standing water.

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Hey it’s root aphids and fungus gnats I see both in the soit only found 1 aphids but where there is smoke there is fire. Week 7 week 3 and week 5 staggered in my grow room. What do I do?

Actually now I’m not sure descriptions fit gnats. I pre make my nutrients for the month and let it sit in a garage can with a lid on it so it’s not sealed. I don’t see colonies of aphids either. I’m going to hit the week 3 and week 4 plants with Bioguard or something tough but not long lasting But the week 7 plants I’ll just have to do naturally and I’m going to keep RH to 40%. I already fed nemotoades to some of the plants. Just testing it all the way around.

Yeah in week 7 there are not a lot of good options to get rid of root aphids, if thats what you have. Maybe get some yellow sticky traps and put them by the soil and see what gets stuck.

Pest management is a reason I don't do a perpetual grow, once infected, the infection is perpetual.

Renfro said:

Yeah in week 7 there are not a lot of good options to get rid of root aphids, if thats what you have. Maybe get some yellow sticky traps and put them by the soil and see what gets stuck.

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That’s what I have done. I’m going to stay on top of it and eradicate it. Leaving a window with a screen open irregardless in the same room as my veg room was fucking retarded. Standing water plain ro waiting to be ready irreigardless dumb move. You can’t be fucking lazy and grow.

https://www.sensigarden.com/root-aphids-cannabis/

Some good info there.