It does look like a cal/mag issue. Do a little reaserch before you go with my 2 cents. I know growing indoors and especially with a 24 hour light cycle the plant grows real fast, and cal/mag deficiency is real common because of the fast growth. Lets see what @enolderman says cause I believe hes way more experienced then me. Other then that your plants look good.
no just tap water that i leave for 24 hours
It does look like a cal/mag issue. Do a little reaserch before you go with my 2 cents. I know growing indoors and especially with a 24 hour light cycle the plant grows real fast, and cal/mag deficiency is real common because of the fast growth. Lets see what @enolderman says cause I believe hes way more experienced then me. Other then that your plants look good.