Help with flowering issue

Hi Everyone,
I think I’m screwed here…Don’t know why buds aren’t growing correctly with this grow. I’m suspecting either pests or root rot.

Here’s my setup…I have a 4x4 grow tent, use fox farm ocean floor soil in 5 gal cloth pots. I’m using 2 HLG 260W XL QB V2 Rspec LED lights. Veg for about 7wks, and I’m on 5 wks of flower. I’ve used preen on plants a couple of times because I thought it might be pests. I use Foxfarm Nutes about twice per week.

Thanks in advance.

Root rot is rare in mature plants.

One issue I see is excess nitrogen (dark green, waxy leaves.) I’m not convinced that nitrogen is your only issue. I suspect you may also have pH and PPM problems. Are you monitoring and managing runoff pH and PPM? Let’s get some more information about your grow and go from there.


A support ticket will help us help you. Can you please fill out a support ticket? Please include what type of water you are using (RO, distilled, tap.)

COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.

If you do not know, or do not use something; Just say so; Or post

NA (non-applicable)

• What strain, Seed bank, or bag seed

• Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF

Soil brand and type

• Vessels: Pots, Grow beds, Buckets, Troths

• Runoff pH

• Runoff PPM/TDS or EC

• Indoor or Outdoor

• Light system and wattage

• Temps; Day, Night

• Humidity; Day, Night

• Ventilation system; Yes, No, Size

• AC, Humidifier, De-humidifier,

• Co2; Yes, No

If growing Hydro some additional questions:

-DWC? RDWC? Autopots? Ebb and Flow? Other?
-Distance of liquid below net pot (DWC)
-Temperature of reservoir
-TDS of nutrient solution
-Amount of air to solution

Always try to upload a clear picture of any issues you may have to allow the community to assist you. Pictures taken under natural or white lighting are by far the best.

Add anything else you feel would help us give you a most informed answer should be included. Feel free to elaborate, but short and to the point questions and facts will help us to help you in a more efficient manner.


I agree with nitrogen toxicity also. Clawing leaves, dark and waxy looking… do you have a tds and ph meter?


• What strain, Seed bank, or bag seed-Amnesia Haze/I Love GM**

• Method: Soil

Soil brand and type-Fox Farm Ocean Floor

• Vessels: 5gall cloth pots

• Runoff pH-5.70

• Runoff PPM-1.572

• Indoor or Outdoor-indoor

• Light system and wattage-HLG 260W XL QB V2 Rspec LED lights

• Temps; 78-80F Day, 73-75F Night

• Humidity; Day, Night-53-60rh

• Ventilation system; Yes, No, Size-6in exhaust fan w/carbon filter

• AC, Humidifier, De-humidifier,-Dehumidifier outside tent

• Co2; No

I’ve never measured runoff ph or tds. I always measure ph going in and that’s always between 5.50-6.50

I just fed them and measured ph & ads going in and what the runoff readings are:

Going in: ph-6.20, TDS-218. These readings are just tap water mixed with some ph down as my tap water has a ph of 8.0. I then added some fox farm nutes to water(Tiger Bloom and Big Bloom). The ph stayed about the same 6.17 and TDS went up to 1.27.

Runoff: ph was 5.50 and TDS was 5.25(yikes…can that be correct?).

Thanks again!

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Have you flushed yet? It’s a necessity when using FF trio. I agree with too much nitrogen as stated above. FF Ocean Floor is notoriously loaded with nutrients, but you’re well past that being an issue. I would suggest flushing at some point until the PPM goes down to acceptable level. Just use plain ol water that is PH-ed.

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Flush flush flush. Get rid of the salts and that should stabilize your ph. In flowering you want a ph between 6.5 and 6.8.


Thanks for the advice. I’ll flush…one last question. Would you use water or Fox Farm Sledge Hammer to flush? Thanks again

Slegehammer makes the process go more quickly. You should flush down to a PPM of 300 to 400 to correct pH back to ~6.5.

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Adjust your PH after adding all the nutrients Growmie. Agree with the others on a PH reset flush then follow up with a feeding if the PPMs are below 800. Follow a drench to drought routine with liberal run off :love_you_gesture:


Thanks in advance for everyone’s help. Here are some readings after a week of flushing(used Sledgehammer flush for one feeding, all the rest have been water). My setup is I have two 4x4 grow tents. One tent(Left Tent) has 4 plants, the other(Right Tent) has 3 plants. I’m also growing one outside.

First Flush
Indoor tents:
9/2/23- ph in-6.80, TDS in-279. ph out-6.05, TDS-3.15

2nd Flush
9/5/23- ph in-6.47, TDS in-226. Didn’t do ph/TDS out b/c values were so off on 9/2

Third Flush-started doing readings of each individual plant.
9/8/23 Flush- Left Tent-ph in-6.84, TDS in-259.

output values for each specific plant in left tent on 9/8/23
right front-ph out-6.13, TDS out-1.39
right rear-ph out-6.69, TDS out-1.04
left rear-ph out-6.13, TDS out-3.25
left front-ph out-6.76, TDS out-1.89

9/8/23 Flush-Right Tent-ph in-6.84, TDS in-271

output values for each specific plant in right tent on 9/8/23
Right plant-ph out-6.24, TDS out-2.02
Left plant-ph out-6.01, TDS out-2.25
Back plant-ph out-6.09, TDS out-2.14

Outside plant:
9/3/23- ph in 6.48, TDS in 306. ph out-6.06, TDS-1.03
9/6/23- ph in 6.65, TDS in 235. ph out-6.38, TDS-550

So let’s see if I’m reading this right. The outside plant looks to be doing fine and I should start adding some nutes to raise the TDS output close to 1000.

The inside plants still need more flushing as their TDS readings are still way too high?

Questions: Will ph output raise once the TDS numbers come down? How long will/does the flushing process usually take?

Thanks again!