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spidex from KOPPERT has always worked best

a normal ppm of magnesium in a solution is around 50 ppm . so if magnesium sulphate Is 10% magnesium then that is 0.5 g/liter magnesium sulphate

n calmag dolomite lime ( calcium and magnesium carbonate) and initially ammonium carbonate ( cationic nitrogen NH4) . it was never meant as a feed it was meant to precondition coco and then never be used again but then the NH4 was replaced with NO3 anionic N usually from calcium nitrate and...

that still is a IMMOBILE mineral calcium and a MOBILE mineral magnesium. 2 separate elements and both start at opposite ends if the plant.

use magnesium sulphate not calmag. magnesium sulphate is 10% mag not 2% of calmag

well its a mobile mineral issue

psuedo science. the only thing that controls thc level is genetics. post harvest it is unlikely. can you post a reference?

what is EC runoff?.that looks like high ec in media causing lockup. burnt tips are a sure sign as well as random deficiency symptoms

BTK spray . Btk spray is non toxic and specifically for fungus gnats. 100% effective

Female

pics? what is runoff EC? do you check ? 80 % of deficiency I see is from high EC in media causing lockup

how much did you expect to spend? I make my own solutions . they are easy to make and inexpensive. about 1$ a liter for 100:1 concentrate . the downside is you need to buy 350$ worth of base compounds but that will make 350 liter 100:1 solution

Highly recommend MARIJUANNA BOTONY by Robert Connell Clark . he explains Gregor Mendel law of hereditary traits very clearly. very necessary to understand proper breeding techniques

purple stems are normal. it is anthrocyanin the normal color of plants

there is no such thing as a calmag deficiency. calmag is 3 separate minerals. calcium which is immobile so it starts at the top and magnesium and nitrogen which are mobile so they start at the bottom

read as many books as you can get. actual literature not you tube . here is a free book download https://oiipdf.com/marijuana-horticulture-the-indoor-outdoor-medical-growers-bible?fbclid=IwAR0JH1NX8PstXr5zrzOK7usNZrL06Ws_nayQR6oasOLGPES0ZaHncX13_pg

I also make my own feed solutions from base compounds

well I test runoff fir EC. usually you run a 15% overflow to keep the EC within 50% of feed EC..usually for carbon based media feed is 1200 Us ( 1.2 EC ) with runoff up to 1800 Us ( 1.8 EC) . ph is usually not an issue in carbon based media . rockwool I run 1700 Us feed 2400 Us runoff .

I grew MK ULTRA from TH SEEDS bought in 2001 . It was completely PM proof. even on a table with kush white with pm the MK were slick green. green clone from clone fir 11 years until I lost the strain. i bought a newer version of MK but it was not even close to the same .

just add 10 % house water back to ro will provide sufficient buffer the standard is 50 ppm carbonate