First time aeroponics grow any info would be helpful thanks

hello then this is my first ever hydroponics grow i made 2 aeroponic systems 8 plants in each system. i got 16 clones which have been in the system for about 3 days.

The roots look like they are doing very well but there is one or two plants that are looking abit unhealthy the leaves turning funny but i am not sure what mite be wrong. thats if there is somethink wrong lol

The room temp is about 17c while the light is on and the temp is dropping to about 11c i think but i think there mite be somethink wrong with the thermo hygrometer. becasue i have a fan speed controler with a builtin temp override and its on 28c and its coming on alot but the temp is staying below 20s on the thermo hygrometer??? so not sure at all lol

my res 1 is a EC 0.51 and a PH 5.7
my res 2 is a EC 0.54 and PH 5.8
the res temp is about 22c for both res

i will try and sort ot some pictures carnt up load them at the moment

Ur gonna need to get a R/cycle timer in the near future if u don't already have one it will help keep Rez temps down from the pumps. U wana keep the temps under control all around.I've found out the hard way

wat is R/cycle timer ??? the pumps are on 15 on and 30 minz off they are not on 24 hours and i have a book here and it was saying that the res temp sure say round aboutr 15c to 24c
but it does say the best temp would be round 15c there is all so an air stone in the botton of both res to keep the water well airated. here is some photos

Most people that run aeromachines run there pump on a repeat cycle timer ( but not air pump) seems like 1min on 5mins off is the best way to go, once I got one and started useing it it resolved alot of my issues with my babys, bad thing is the timers are around 80$