Dalek,
Having a hard time finding what you said to quote, but I recall earlier in the thread you were discussing the 3 different solutions you have pre-mixed to read the plant without a PH pen. 100% tap water PH'ed, 100% Nute PH'ed, and 25 or 50% nute PH'ed? My question is how long do you store these for? One of the biggest pains for all of us is mixing the nute solution. I would love to prepare it in advance, but I need to setup a res with some air stones so the water doesn't go stale, correct?
I use a modified Lucas formula.I was trying to make things simpler but went back to my original method.The nutes remain the same.
I make two types of one gallon jugs now for keeping it simple stupid or kiss method.The jugs can be stored no problem for a month.I never stored longer than that,and normaly just have 2wks in reserve.The jugs can be stored longer technicly,but whatever you do keep them cool,and dark.No bubbler is needed.I just turn capped jug upside down,and shake.You can bubble a res if you want,but I would just stir good with a nonmetallic stirring instrument.I would also whip it in some fashion to bring some air,or dissolved oxygen into the res solution.I like a capped jug so there is no evaporation,and has a handy handle.
Each liquid nute/sup (supplement) has it's own specific (ml graded) pipette (Amazon) to prevent cross contamination of the concentrates.My 100% solution is the max for my lighting/setup.The 100% solution feeds the stretch.Post stretch I make a 50/50 mix of the 100% solution,and PH'ed tap directly into my hand feeding cup.This to me is easier than an extra jug laying around of the 50/50,and is my original method.Coming closer to known harvest I will taper down strength with hand feed cup method all while feeding the buds,and watching overall plant.Last 1.5 wks of known harvest I want 25% strength,and just PH'ed tap-plain tap in final days.Knowing your plants to your setup pays in knowing what this,that,and when for smooth smoke before the jar.Feed the stretch,then feed the buds,and then feed you.I do not claim my overal method is the shiz but it works for me,and no plants are created equal.
Nutes/suppliments/buffer per gal tap water
100% nute solution* (*for my setup:8 55W PLL florescent,50/50 6.5K/3K spectrum mix,2x2x2ft bloom chamber,micro Hempy cup SOG)
GH Maxibloom: 3/4 tsp or 5 grams (7 grams is Lucas formula Maxibloom)
Dyna Gro Pro Tekt: .5ml (awesome stuff right here)
GH Diamond Nectar: .5ml (a little sumtin to make the plants feel at home)
GH Liquid Kool Bloom: .5ml (all little extra of sumtin sumtin to feed the buds)
Dyna Gro Bloom: .5ml (awesome base nute unto itself,and purely used for extra insurance for overall plant health,while keeping with kiss)
Epsoms salts: just a pinch between my fingers sprinkled into jug (a little extra sumtin for the green)
GH Liquid PH up: .5ml (measure PH 2-24 hrs after nute mixing for acurrate post solution PH reading before adding adjusting buffers.Your tap/water will be different than mine,and will require a different measure)
This buffers to PH 6-6.1 (target PH 6)
PH'ed tapwater per gal tap
GH Powdered PH down: Shy 1/8 tsp
Buffers to PH 6 (usualy stabilises right away for me)
50% strength nute solution (I just do this directly to my hand feed cup like I originaly did)
.5 gal 100% nute solution blended with .5 gal PH'ed tap.
Buffers to PH 5.9-6
Target PH of 6 (standard for me) is in acceptable parameters. (once you get to know your plant then play with other targets,and swings for veg/bloom)
100% solution
Feeds the 12/12 stretch,supports weight gain,and a boost if needed.Cutting production for moms.
50% solution
Rooted clone first feed/res fill before feeding 100% to gear up for the flip.For Moms in stasis or non production.Mid thru late flower to balance out nute uptake.
PH'ed tap
General precipitate nutrient chem salts flushing,and making less than 100% solution.
1 pipette drop of Clorox bleach per gal at least a half hour before jug use.Bleach is very easily overdosable so using HHO2 in proper measure instead for a sterile res maintenance is advisible if no dropper is readily available (a drop from the cap can hurt your plants,or possibly kill).3 pipette drops per gal is potentialy fatal for small non bubbled reservoirs.
http://lucasformula.com/
https://www.icmag.com/ic/showthread.php?t=191645
https://www.icmag.com/ic/showthread.php?t=98419
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