Tropicals & Tender Perennials: Alocasias and Colocaisas, 1 by tigerlily123

tigerlily123 wrote:
I finally got a camera and figured this out. These are the Californias that are starting to yellow. I tested the PH and EC levels and the PH ranged from 5.4-5.8, and the EC levels were around 2.25. I normally can never get PH this low with this soiless mix, and so I am thinking it was the triple 14 slow release that is driving these numbers down?
Shouldn't the PH be up around 6-6.5? Do the EC levels look good, or can they be higher? The roots look great, and after transplanting them 2 wks ago, there are roots starting to hit the sides and bottom of the pot.
Does anyone know the quickest way to raise the PH besides using a basic fertilizer? I will switch over to a 15-0-15 this week, but I am at about 200ppm, and it can take a while raising the PH this way-esp if the slow release is driving the PH down.
The Californias are the only ones wigging out like this. The others seem ok, the caladoras are a bit yellow.