I dont know ehat im doing wrong

[gemini_ranger]

I think you are dealing with lock out. You should not be adding much if any calmag at that stage of the grow with HF or OF. The distilled water might need 50-100 PPM calmag as a slight buffer, any more is likely to cause problems, those soils come pre-loaded with quite a bit of calmag.

Mild feeding to slight runoff for the next couple weeks is probably your best approach right now.

good luck!

Because I wasn't using cal mag until I show people the pictures I shown yall. They said it might be cal mag. And to add it. So I did

 

[Qbgrower]

I'm no expert so I'll tag the forum expert on nutrients.

@Mañ'O'Green Can you help here? Hope you don't mind me tagging you.

Qb

 

[Danielsaaan]

I’m in OF for my first grow and I’ve been giving full nutrients since the third week, every other water. Haven’t supplemented calmag, my plants are doing pretty good! 5 gallon fabric pots as well. I use tap water but pH everything to right around 6.5

 

[tronN00dles]

Feeding once per week at 1/4 strength isn't enough. Your plants are hungry (although the burnt tips makes me question this hypothesis, but that could be a lockout/environment issue... see below)

You seem to be in mid bloom, so as per the feedchart here: https://www.thegrowshow.org/fox-farm-feeding-schedule, 1/4 strength is only 0.75ec or 375ppm. (the chart infers full strength is around 3.0ec). 375ppm is too low for a flowering autoflower, especially if you're only feeding once per week.

I'd bump my feeds up closer to 550-600ppm (1.1-1.2ec), give nutes every other watering, and drop the calmag.

Note, the feedchart uses the 700ppm scale. The numbers above are based on the 500 scale. Best to go by EC to avoid ambiguity.

Aside from the underfeeding, you may have some sort of P-K lockout going on, but a good course of action there is to just drop the calmag. And is your pH pen good/calibrated? If it's one of those cheap Amazon jobbies I wouldn't trust your readings. Best to aim closer to 6.5 for soil to give you a bit of leeway on either side if your pen is off...

And do you track VPD (temp + RH) at all? Nute absorption is largely dictated by environment... checkout www.vpdchart.com to make sure your temp/RH is in a good range. If I'm feeding my plants poorly and blasting them with improper light levels, they might also show some tip trouble, which would be exacerbated by a bad VPD... Just something to consider.

-tron

 

[Tom Bombadil]

Hungry. trio nute schedule must be followed precisely as I believe some of their nutes need to build in the soil and have time to become available when needed. #5 or "5 gallon" cloth pots are closer to 3.5 gallons so youve probably been starving your plants for 3 weeks or more at this point. Looks like its all deficiencies as opposed to lockout but im not a bottled nutes guy... Wait till @Mañ'O'Green chimes in.
GL

 

[gemini_ranger]

Feeding once per week at 1/4 strength isn't enough. Your plants are hungry (although the burnt tips makes me question this hypothesis, but that could be a lockout/environment issue... see below)

You seem to be in mid bloom, so as per the feedchart here: https://www.thegrowshow.org/fox-farm-feeding-schedule, 1/4 strength is only 0.75ec or 375ppm. (the chart infers full strength is around 3.0ec). 375ppm is too low for a flowering autoflower, especially if you're only feeding once per week.

I'd bump my feeds up closer to 550-600ppm (1.1-1.2ec), give nutes every other watering, and drop the calmag.

Note, the feedchart uses the 700ppm scale. The numbers above are based on the 500 scale. Best to go by EC to avoid ambiguity.

Aside from the underfeeding, you may have some sort of P-K lockout going on, but a good course of action there is to just drop the calmag. And is your pH pen good/calibrated? If it's one of those cheap Amazon jobbies I wouldn't trust your readings. Best to aim closer to 6.5 for soil to give you a bit of leeway on either side if your pen is off...

And do you track VPD (temp + RH) at all? Nute absorption is largely dictated by environment... checkout www.vpdchart.com to make sure your temp/RH is in a good range. If I'm feeding my plants poorly and blasting them with improper light levels, they might also show some tip trouble, which would be exacerbated by a bad VPD... Just something to consider.

-tron

Yea I've been using the yellow pen from Amazon. I will invest in a better one. Try to make sure the water is 6.5 all the time. Right now I have the tem at 78° and 45% humidity. In the beginning I was told ff soil run so high i just need a quarter of the nute. Than advised to add cal mag. Im going to drop the calmag and up the nutes to full strength. Didnt realize I was starving them. The ppfd is around 900. I have a mars tsw2000 running at about 85% around 16 to 18inches from the tops of the plant. I will try nutes every other watering and bump it up to full strength. Hopefully see some improvement. I've been using the ff feeding chart. Last I did was the week 8, grow big, big bloom and tiger bloom mixture. Thanks a lot guys. Im learning a lot. I just want my ladies to make it to the end lol. We barely in week 8.. this is a lsd auto strain and from the grow journals I seen on them. They aren't done until like week 15.

 

[gemini_ranger]

I’m in OF for my first grow and I’ve been giving full nutrients since the third week, every other water. Haven’t supplemented calmag, my plants are doing pretty good! 5 gallon fabric pots as well. I use tap water but pH everything to right around 6.5

Do you use their recommend dosage?

 

[gemini_ranger]

I’m in OF for my first grow and I’ve been giving full nutrients since the third week, every other water. Haven’t supplemented calmag, my plants are doing pretty good! 5 gallon fabric pots as well. I use tap water but pH everything to right around 6.5

I mean do you use the recommend dosage for the ff trio? Or other nutes? I'm thinking on switching to tap water. Been using distilled water this whole time.

 

[tronN00dles]

Yea I've been using the yellow pen from Amazon. I will invest in a better one. Try to make sure the water is 6.5 all the time. Right now I have the tem at 78° and 45% humidity. In the beginning I was told ff soil run so high i just need a quarter of the nute. Than advised to add cal mag. Im going to drop the calmag and up the nutes to full strength. Didnt realize I was starving them. The ppfd is around 900. I have a mars tsw2000 running at about 85% around 16 to 18inches from the tops of the plant. I will try nutes every other watering and bump it up to full strength. Hopefully see some improvement. I've been using the ff feeding chart. Last I did was the week 8, grow big, big bloom and tiger bloom mixture. Thanks a lot guys. Im learning a lot. I just want my ladies to make it to the end lol. We barely in week 8.. this is a lsd auto strain and from the grow journals I seen on them. They aren't done until like week 15.

Full strength at this point in the feed schedule is 3.0ec or 1500ppm, so I’d be careful going that high with autos. I’d try closer to 600ppm / 1.2ec first and see how they react.

 

[Danielsaaan]

I mean do you use the recommend dosage for the ff trio? Or other nutes? I'm thinking on switching to tap water. Been using distilled water this whole time.

I follow the recommended dosage instructions on each bottle. I believe the “feeding schedule” is intended for people who use the entire line. I’m only using their Kelp nutes, the trio, plus Beastie Bloomz (not til later in flower tho). PH everything to right around 6.5 give or take. My pen is Apera Instruments and I’ve been really happy with it so far!