DAY 46:
Temperatures: ... Ambient Room 25 ℃ [+/- 2 ℃]
Humidity RH%: ... 40 [+/- 5%]
Lighting: ... 4 x 600w HPS
Schedule: ... 20/4
Nutrients:
GH MICRO (Hard Water) @ 2.0 ml/l
GH BLOOM @ 4.0 ml/l
AN CalMag+ @ 2.0 ml/l
AN Nirvana @ 2.0 ml/l
AN Voodoo Juice @ 0.5 ml/l
AN Big Bud @ 2.0 ml/l
AN Bud Candy @ 2.0 ml/l
Radical Nutrients Compact Buds @ 0.25 g/l
pH of Feed: ... 6.2
EC of Feed: ... 2.3
Feeding: ... ~ 2.0L
Feeding time for the ladies.
Mixed it up again.
The general consensus in the infirmary re: nutrient deficiency issue on the leaves was a Cal-Mag deficiency, possibly as a result of Nitrogen toxicity.
I'm relatively comfortable with that, given the dark green colouration to many of the leaves (N-tox) and the yellowing coming through on some (Cal-Mag)
So the diet was amended to try and simultaneously address both possibilities.
Base nutrients were switched to the
Lucas Formula using General Hydroponics Flora MICRO and BLOOM only.
Theory being, the
Lucas Formula is premised on there being enough Nitrogen in the MICRO to sustain the plant, rendering the GRO as superfluous to needs. Given the possibility of N-tox, this seemed a pretty obvious and positive adjustment to make.
Ratio of MICRO:BLOOM is a simple 1:2.
Easy peasy.
Also seemed a logical thing to do given the AN Cal-Mag supplement has N-P-K of 4-0-0, so there is additional Nitrogen there too. [thanks to
@MeefChief for the heads-up on this one!]
In hindsight, if the GH Flora GRO has Nitrogen surplus to requirements when using the GH Flora MICRO, and then adding a Nitrogen heavy Cal-Mag supplement as well, it's not hard to see how a Nitrogen toxicity situation could arise. Nitrogen can lock out Calcium ... yada yada yada ... suddenly you have dark green leaves and a Cal-Mag deficiency.
Voila!
It's also time to throw the turbo boost onto bud fattening and resin production, so today I gave the girls a taste of the secret weapon -
Radical Nutrients Compact Buds. Have to tread very carefully with it - it can send the EC through the roof.
Compact Buds is a PK 5-38 enriched with calcium and amino acid synthesis,
the high proportion containing phosphorus and potassium...
Yay ... more Calcium.
Cream Caramel Auto x 1
Cream Mandarine Auto x 3
Cream Mandarine XL Auto x 4
Green Poison Auto x 4
Sweet Trainwreck Auto x 4