sulfer def.?

i know im not posting any info besides the plant, but does anyone have experience with their plants doing this? everything is healthy, even the new growth, but its lighter in color than the rest and its kinda slowing down. thinking its sulfer def. it could also be a result of low or high ph (waiting on test strips, digital ph meter broke last week) thinking maybe a 1/2tsp per gallon of epsom salt to fix that yea? also thought that it may be from it being colder temps at night, but it doesnt get below 65, so im not sure about that either. if anyone has any ideas or experience with their plants doing this please let me know, thank you so much guys.

or does this look normal?

looks like the normal leaf cycle, when it grows bigger it darkens up, its the older ones that you want to keep and eye on and they have some lovely green colour. i would just see how they get on fella.
good luck with it
lu

What you have there with the light-colored new growth is an excellent example of what cold nights will do. Here's another pic of the same problem: View attachment 1527393

take some soil put in a glass pour vinegar on it. if it fizzes like a soda its alkaline. if you pour water on it with baking soda mix and it fizzes its acidic.

i just got done saying goodnight to the girls and omg, the color just came right back, today's high was 87degrees, lets see what the low is tonight and ill take a look in the morning to see if they turned back to a light green color. if so ill prolly just have to throw a space heater in there until it warms up... not too much longer and spring will be here! but yea the color was beautiful right before the lights went out, thanks guys appreciate it. oh and good shit shizz, ill try that experiment out, but i just got those ph test strips today and the ph is perfect. i havent been feeding them too much, kinda feeding by eye, i know that if the color is light green they need fed more so they could be slightly underfed, theres no signs of fert burn at all so looking good on that department. thanks again guys

i raised the light about 3 inches too, so maybe that had something to do with it aswell, either way they looked great!