Quote Originally Posted by fiona886
Hi will somebody help me?
My first indoor plant i has problem with yellow spots.
My plants have 4 weeks old from 2 weeks yellow spots start showing. In first 2 weeks the temp. was from 82 to 91 degree. Now when light is on is 84 & humidity 45% and when it off is 65 degree & 75%.The air movements are fine. Is the Temp to height? What nutrients will be the best for them.
First off, the plant is VERY likely root bound,... So re-pot that sucker.

Second issue is 70-80 is closer to optimal temps during lights on. 91 is a little to hot.

Third,.. Although such high humidity during dark hours will likely slow any chance of mites. Anything over 50% risks molds, fungus and gnats. So keep it around 40-50%.

Lastly,.. It kinda looks to me like nute burn. Those lower leaves are where high nutrients will collect and burn them.

So,.. Let it dry out, then re pot. Make sure your lights out humidity stays under 50%. Don't use nutes until it recovers. Then use nutes very sparingly.

First pic is a 4 week old minutes after re pot, before recovery.

Second is the same plant a couple days later.