Nutrient Lockout: Flowering Help

Hello, I need your advice since I experienced an issue and I think I messed it up. I don’t have the experience to carefully judge and apply the correct remedy (1st grow).

Q: Is flushing during flowering a good remedy when suspecting a nutrient lockout?

Currently: Day 59 on Royal Dwarf Auto (8th week) from Royal Queen Seeds.

Medium && Equipment:

• Soil: Bio Bizz Allmix
• Pot size: 11.5 liters (Fabric one)
• Light: Mars Hydro TS600
• Numb of plants: 1
• Light Schedule: 20/4

Nutrient Schedule: (BioBizz Products) - On every watering

• Bio Grow 1 ml / L
• Bio Bloom 5 ml / L
• Bio Top Max 5 ml / L
• Bio Heaven 6 ml / L
• Bio Active Vera 6. ml / L
• Bio Calc Mag 0.5 ml / L
• Bio Fish Mix 1 ml / L

Extra Information:

PH was regulated from 6th week and after values 6th week vary from 6.3 to 6.5 because previously weeks instrument of measurement was not accurate (strips, now pen) - Now PH is stable at ~6.4

Issue described:

Since adding extra nutrients from week 7 (Extra were: activera, calcmag, fishmix, heaven) dwarf got greener and healthier, though after a few days growth was stunned and leaf tips were yellow (Indicating probably nitrogen toxicity as far as I searched online). Whole other plant was nice vibrant dark green buds were not fattening up as they should. Only leaf tips yellowing through entire plant both on top and bottom leaf.

Remedy applied:

Decided to flush it with ph balanced tap water X3 times (30 Liters in one sitting) the volume of the pot to get all excess nutrients and salts out (Again checked online for this)

At first wave of flushing my runoff excess water had ppm of 2300 which I think was too high indicating a nutrient lockout. I continued flushing till I got a solid runoff of 350. (Tested it with a tds / ec meter)
Ph at all stages of flushing was stabilised in runoff at around 6.3 to 6.5.

Questions to experts:

1. Shouldn’t I have flushed at this stage when I’m planning to harvest in 3 – tops 4 weeks?
2. I followed official BioBizz nutrients feeding schedule and applied the dosages that were described on their website, but it seems Bio Grow and Fish Mix skyrocketed the nitrogen too high and cause the lockout – Can you suggest an alternative feeding schedule more conservative?
3. Is it normal not to water it all for at least 1-2 days since I want the soil medium to get dry and airy cause now it has drained but it’s still wet underneath.
4. Am I elevating my chances for bud rot since the medium is still wet (I tried to strain it).
5. Should I continue to water it with my previous feeding schedule as described above for two more weeks and then flush && harvest?

Misc. info:

This is first grow and it hasn’t been very successful since many mistakes were done, mostly with wrong PH due to lack of proper equipment. Want to thank you all for time you took reading this post. Hope you all have an awesome day & be safe.

PS: Pictures of dwarf after flushing / minor change yet to flush.

Pictures link (since they are too big to be uploaded here)
Edit: Uploaded close ups from the colas for more reference as per users request
Thanks

Those plants look pretty healthy, to me they look about a week out from harvest though hard to tell without a close up.
It's pretty hard to overwater an established plant in a fabric pot. What u should be doing is every time you water make sure u get about 20% runoff to prevent a nutrient buildup like u described. I think you should resume normal feeding schedule after u flushed.

Plant looks good to me. The yellow tips are from too much fertilizer, but I'd bet 99% our leaves look like that. Just resume regular feeding schedule and you should be good. I wouldn't sweat PH too much either. I've never used BioBizz, but if it's a good soil, it will PH itself. I'd say anything between 5.5-7.5 will be fine and the soil will PH itself.

Next go around I'd try cutting the nutes back ~80% of what you were using.

SnoopyDoo said:

Next go around I'd try cutting the nutes back ~80% of what you were using.

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At least not feeding every time you water. I’m surprised it looks this good honestly.

trambles said:

Those plants look pretty healthy, to me they look about a week out from harvest though hard to tell without a close up.
It's pretty hard to overwater an established plant in a fabric pot. What u should be doing is every time you water make sure u get about 20% runoff to prevent a nutrient buildup like u described. I think you should resume normal feeding schedule after u flushed.

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Updated post, provided close ups as well for further reference. I'm thinking of chopping in around 3 weeks. 2 more weeks with normal nutrient schedule && last week flushing. I don't currently have a microscope for trichromes viewing. Maybe 3 weeks is overkill?

Also when I water with current fabric pot I don't let it runoff (I water like max 700 ml per day so it doesn't need to runoff). Maybe this is the issue I had a nutrient lockout buildup? Is this a mistake, should I let it runoff next time like 20% as you suggested? Thank you for the reply. Much appreciated.

hotrodharley said:

At least not feeding every time you water. I’m surprised it looks this good honestly.

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Hello and thanks for the reply. I thought I had to follow these nutrient schedules through every watering. I can keep one day on and off with nutrients. Normally what's the protocol? Depending on the feedback I get from the plant should I either water with nutes or without? Thanks for the information you provided and for your time.

SnoopyDoo said:

Plant looks good to me. The yellow tips are from too much fertilizer, but I'd bet 99% our leaves look like that. Just resume regular feeding schedule and you should be good. I wouldn't sweat PH too much either. I've never used BioBizz, but if it's a good soil, it will PH itself. I'd say anything between 5.5-7.5 will be fine and the soil will PH itself.

Next go around I'd try cutting the nutes back ~80% of what you were using.

Click to expand...

I found out late that AllMix is a hot soil and I should rather use a LightMix , without so many nutrients pre input. Though for first time it helped cause I started feeding after 4th week. My issue currently is that the dwarf hasn't fattened enough and even though there are some buds, it's not so big as I expected. I hope the flushing and the re nutrients decreased will help it grow a little bit more prior chopping in 2-3 weeks. Thank you for your reply and for your time.