please help new tips yellowing

can someone please help me before i blow a gasket i dont know whats going on i did 36 hours dark started my 12/12 and started nutes 1/4 strenth alaska more bloom and macro fox farms big bloom with 1/2 teaspoon of epson salt..and wah lah this is what i get all the new growe area are coming out yellowish and it seems to be from the spots the likely will be budding spots soon please help someone soon..pics below you can see the spots that are yellow.

Are you in soil or hydro?

What is your PH?


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im in soil ph is right at 6.6 i just found this and it could be i moved my plant to a different area in the house to get total darkness and we had a cold spell i hope that is the trouble and if so it should be easy to fix right?


Miscellaneous Sick Plant Troubles

This picture is caused by temprature changing from cold to warm, cold nights and warm days.

Some varieties, like equatorial sativas, don't take well to cold weather. If you can keep the roots warmer, the plant will be able to take cooler temps than it otherwise could.

This picture is what light bleaching/ light burn looks like.
Only way to fix this is to Move the lights away from the plant!
Or make sure you dont go over 75 watts a sq foot, or your plant will have to much light and light bleaching can occur anywhere on the plant. (indica species seem to bleach easier than sativas imo

light death, the plants stayed in the dark to long and push the new growth and could not process the nutes.

what to do now? the plant is still very healthy and has grown another inch just today.