HELP NEEDED: Leaves turning yellow and whitish spots started appearing

igm.ig

New Member
Hi,
I use biotabs fertiliser (shown in picture), keep the temperature around 28.5 and humidity at 50. I watered them every 2 days and put around 1l of water (until it soaks through to the bottom) Recently two of the plants' leaves started turning yellow with white/beige spots appearing and I'm wondering whether it's because they're overwattered or some other problem. Would appreciate any help!
Thanks20200706_184750.jpg20200706_184836.jpg
 
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