Need Biotabs Flowering Expertise!

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im starting from the beginning. i have 4 LSD Auto from barneys in 5g airpots filled with biobizz lightmix and worm humus 25% and biotabs starter box ingredients. Germinated well and around day 25 i placed two biotabs each pot and also dialed in blumat drip system with gravity reservoir only plain water around 0.43 EC so I assume there is enough calmag in it. Plants did very well till around week 8. I noticed front left plant developing brown spots on leaves randomly and upper parts of stems turning purple. flowering was very slow compared to others.
I brewed first compost tee at the end of week 6 and next week I fed 10ml/l bio pk 5-8 as top feed. end of week 8 compost tee again with 2ml/l bio pk added. I also did the 20 ml/l orgatrex feed at day 35.
at week 9 and 10 i noticed my dripping system malfunctioned and overwatered the plants ( no run-off)
i recalibrated them at around 120mbar. a week passed. and front plants only get worse. very slow flowering almost all pistils turned reddish. stems purple and looks like lockout.
pictures are today at day 73
so far i gave compost tee 3 times and some bio pk feeds, bactrex once in two weeks with some orgatrex. and crushed 2 biotabs divided to four pots as top dressing at day 61. when i noticed overwatering last week i dried out the plants first. there was a bad feeling smell coming from front right plant like popcorn or something as soon as i entered the place and it dissappeared this week when dried up but has not recovered yet. I added epsom salts to the reservoir and as topdress from 0.43 to 0.9 ec i hope it helps. I want to know what did i do wrong? possible overfeed? all upper stems are purple for almost two weeks and those buds not fattening enough. 4x4 tent.
 

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im starting from the beginning. i have 4 LSD Auto from barneys in 5g airpots filled with biobizz lightmix and worm humus 25% and biotabs starter box ingredients. Germinated well and around day 25 i placed two biotabs each pot and also dialed in blumat drip system with gravity reservoir only plain water around 0.43 EC so I assume there is enough calmag in it. Plants did very well till around week 8. I noticed front left plant developing brown spots on leaves randomly and upper parts of stems turning purple. flowering was very slow compared to others.
I brewed first compost tee at the end of week 6 and next week I fed 10ml/l bio pk 5-8 as top feed. end of week 8 compost tee again with 2ml/l bio pk added. I also did the 20 ml/l orgatrex feed at day 35.
at week 9 and 10 i noticed my dripping system malfunctioned and overwatered the plants ( no run-off)
i recalibrated them at around 120mbar. a week passed. and front plants only get worse. very slow flowering almost all pistils turned reddish. stems purple and looks like lockout.
pictures are today at day 73
so far i gave compost tee 3 times and some bio pk feeds, bactrex once in two weeks with some orgatrex. and crushed 2 biotabs divided to four pots as top dressing at day 61. when i noticed overwatering last week i dried out the plants first. there was a bad feeling smell coming from front right plant like popcorn or something as soon as i entered the place and it dissappeared this week when dried up but has not recovered yet. I added epsom salts to the reservoir and as topdress from 0.43 to 0.9 ec i hope it helps. I want to know what did i do wrong? possible overfeed? all upper stems are purple for almost two weeks and those buds not fattening enough. 4x4 tent.
i think for autoflowers throwing all those products at them has got you totally in a spin id be going with your doses maybe with photos anyhow I grow 4 plants in autopots and 2 top fed all with biotabs my only difference being I prepare all my soil with silicium flash and besides adding my pk 5.8 weekly in flower I try to do as little as possible also I've never known people to feed to run off with biotabs well I never have in either tent .so my only advice I can give is slow down trying to fix everything as I think your letting them go way out of sync I also have a thread if you wanna look were I've grown for a couple of years none stop with biotabs
 

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it's a legendary thread🤤
in my country silicium flash is hard to find thats why im not using it and the manual says i can replace it with some orgatrex feedings throughout the grow.
I see you guys always use silicium instead of orgatrex. is there a reason for that? maybe its being there in soil all the time dealing better with the plain tap water coming from drip line or autopots?
I will get it for my next run.
do you use it the way manual says or do you top feed sometimes?
i remember that orgatrex also has silica in it and already included in the starter box made me discard silicium which seems essential part of your grows. and heard some people say its not needed for autos.
sorry for my language im not a native speaker.
 
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