Originally Posted by Syd Barrett
Hi guys,this is a plant in a greenhouse-like room and I'm having issues.This started 10 days ago but I left for a trip and found her this way...
Worst is that this seems to be spreading to other plants ,too...They are in peat/coco/perlite/ewc 18 lt pots.
I have used biobizz and an iguana ,some times have added some cal mag ,too.Have fed with an organic slow release at 1/2 dose before I left.
I also got a few fungus gnats but i think I'll deal with them.Could it be them causing this problem(don't think so myself)?Another pest maybe?Haven't seen anything with the mic...
I had something similar with another plant but it seemed to mellow out after heavy feeding.Took a rough ph runoff sample and read 8 after watering with 7.6...So could it be the ph?
I would say the pH is the first thing to look at, before other environmental variables like temperature, relative humidity, etc.
The pH seems way too high.
Also, why complicate things and add peat and perlite to the coco coir?
Just grow in coco, keep the pH 6.0 throughout the grow, and you'll be OK. You can water/feed less frequently (say, every other day), and at lower concentrations. Less frequent watering also increases the stability of the medium.
In nature plants aren't fed by top watering or a drip. They're fed by mycorrhizal fungi taking nutrients from the subsoil and topsoil, and they're watered by water drawn up from the water table and maybe an infrequent rainshower. Or in the case of the tropics, the water table is raised once a year during the monsoon, and then nothing except humidity until the next monsoon.
Moisture is retained in the soil by the micro-climate created by the mulch of plant debris on top of the soil.