If your 3 weeks in now and plants a fair old size with plenty of roots, well im convinced the ferts that were already in the medium have become depleted which is why your seeing underferting symptoms and 0.5ml a liter of base ferts is way underfeeding, tbh i can`t see why feeding that miniscule amount of ferts you would think over ferting. Plain and simple fix is up fert nothing else needs doing. But 0.5 ml a liter of ferts is what you give a seedling.grownnotflown420 wrote: ↑Fri Dec 04, 2020 1:40 pmThanks Man2-Scoops wrote: ↑Fri Dec 04, 2020 1:32 pmYes i still think they looking hungry and your underfeeding.grownnotflown420 wrote: ↑Fri Dec 04, 2020 1:04 pm
i measure in PPM dude not EC
so my base water is 22PPM
combined PPM once nutes mixed in is 473PPM
Here's my pen (if im allowed to post links, if not SORRY ADMINS):
https://www.amazon.co.uk/gp/product/B08 ... UTF8&psc=1
Basically get NPK of base ferts from back of your bottle. How many ml per liter of your base ferts are you giving roughly ?
Check run off ppm doing that will give me a rough idea how much ferts your medium is holding. Doing that you`ll soon get to bottom of whether its underfeeding or overfeeding
Fed with .5ml per litre of base ferts
do you know if i can give them more water to perform the run off? or shall i wait until theyre dry enough?
Out of interest what other ferts do you have i see you mentioned coco ferts ? Iff you have any A&B coco ferts i`d be trying those around 1.5ml perliter of both A & B. But thats your problem mate your underfeeding and im more convinced than i was when i first saw your plant pictures in your first post now after what you`ve just told me. They have everything in for a plants needs and coco is a calcium and magnesium hog the coco ferts should have extra in.
Wait till next feeds check run off and check first bits out. Dont check it in run off tray cus that`s prolly full of old salts too. Checking run off mind you is only a guide and not a very accurate guide at that as to what your medium is saying.