look like you and those 2 strains get on very well !!!!............. apart from underwatering, and over feeding a tad, you smashed it........................... and you use no "Canna Pk13/14" trichome boost at 250ppm last 4wks of flower, (Grusome kit !) if you did......... they would be pure silverbacks !.............
i would guess in cocco, with a low Ph feed @5.8, buffered by the alkaline "sink" or calcium carbonate reservoir, inherent in the cocco fibre,............... the run off Ph should show around 6.1 to 6.3................. if the cocco went acidic the phosphorus would drop out of uptake range and show whole leaf yellowing, mid to lower plant area...... as chart below Ph5.8 = phos lock then the others follow "Chronically" not "Acutely"
i tend to run a slightly higher Ph in cocco or soil, for the last 3-5wks of fruitification, and maintain that Ph into the zero nute flush period 7-10days..... higher Ph in flower target the flowering macro mobile nutrient uptake Ph availability much better >>
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Pk13/14 last 4-8wks of flower.................at 250ppm.................... add some sugars of some sort every third feed, 1tbls of sulfur or aluminum free molasses, in 500ml feed water give each plant 100ml "Then water it in" with feed water on top....... 'Palm Tree Ashes" i use................. a top dress on the soil........... 1tbls twice, during the 6-8wk flowering period......................they break down slowly, preventing acute acidic grow medium "Ph Swings".......
what you see is the "genetic variance" of the bean population pheno & genotypical outcomes, when they where conceived !!............ a sort of canna Asperger's.................. the plant is "Sensitive" to odd ball things like, over watering or dont like to much n........ in particular, "Aint Keen On Hiigh Ec's"........... and low Ph'es........
The evidence, the "Plant Visual Feedback" of the affects of high dose concentrations (Ec's) of macro mobile nutrients NPKCa..............is staring you in the face is the very dark green primary leaf color........ next grow try and half the feeds measures or Ec's you used this grow, add the flower boosters at the end of a grow....
nutrient build up in the cocco....................... if you take an Ec reading of the run off test you are going to do................. it will read 2.5 or above................ leading to nutrient burn at the perifery and seration at the leaf edges.......... as pics above.............. on the lower leaves.................... the upper leaves show no burn............... so just one or two double strength feeds, proply led to the burn and super green of the high nitrogen content in the feed........................ cal/mag has a very high nitrogen content as N is the K & ca vector......
he might not use a Ec or Ph meter, is what led to the high nutrient chronic application........... the strongest Ec i feed at the end of flower boosts is Ec0.9................thats nutrient only Ec.................... dose not include feed water Ph at the time of mixing............................ i allway's warm my feed water to 2c above the root temp at 21-22c................... so i feed it at 24c............... in soil temp of 22c..................... they love warm feed........ like tropical rain.........
see chart above thats a bit low for end of flower @d78-82 etc................... even in cocco.................
due to the resilience of the strain..................... more than one of the reasons it was originally sellected........ it will yield you a nice flower collection..................... i recommend due to nute build up,............... you give them a water only, water flush for 7 days to reduce flower nutrient levels, which if left, then dry'ed into the flowers can result in a being a bit harsh on the throat.................
A pure water flush at Ph7.0.............. then leave them in the pots to dry out the root and flowers, for 3 days light on, and a day 24hrs lights off, before you cut them down......... so the flowers are dry'er when harvested, and dry easier when left on the plant to dry a while first.... and the terpene's will be much more prominant, after letting the flowers dry a while on the plant...................... enjoy the fruit ALR
