Why are they yellowing?
I’m new to Anthuriums and quickly adopted a dozen of dark leaf and strapping leaf ones. I love them! However I’ve been noticing yellow edges and tips on a few of them.
They all came to me between January and April. Most of them were shipped from somewhere in the US, and a few from Ecuagenera and Thailand. I cleaned the roots thoroughly and transitioned them to lechuza pon right away in self watering pots.
Most of them (pic 1-3) are living in an IKEA cabinet, with 70-90 humidity and 65-90 temperature, under growlights (Barrina T5) for 14 hours a day. Four 80mm fans are on 24 hours a day. I add hydroguard, silicon, cal-mag, and foliage focus at full strength every watering, and use a little bit of PH up to adjust ph slightly. I mostly used hydroguard and rapid start when they were newly transitioned. A few of them (pic 4) grow in ambient humidity of between 50 and 75 also under growlights for 14 hours a day. I flush them at least once a month.
I also checked them closely with a jewelers loupe and didn’t see any crawlers, but I could be missing something.
Now that a few of them are showing yellowing, I just wonder if there’s something I could do differently. What do you think is happening here and what can I do? Any thoughts and suggestions are appreciated.
Light: Barrina T5/Soltech track lights 14 hours a day
Potting mix: Lechuza Pon
Watering: Self watering; flushing at least once a month
Humidity: 70-90/50-75%
Temperature: 65-90F
Fertilizer: hydroguard, silicon, cal-mag, foliage focus, all at full strength every watering