Help my little girls

I'm growing 4 greenhouse chemdog plants indoors under a 600 watt mh bulb, air cooled reflector hood, in a 4 x 4 x 7 grow tent. They are 3 weeks old ive started feeding them DNF, kelp foiler(spraying and adding to water) and bat guano(added over the soil) feeding them nutes every 3rd water. tempreture is between 25-27 degrees celcius 40% humidity. lately my plants have started to have yellow dots show up on them some of the leaves are curling.

Too hot, try to keep at 76-78°f and when lights go off hit em with a water bottle

robert030188 said:

Too hot, try to keep at 76-78°f and when lights go off hit em with a water bottle

Click to expand...

If that doesn't help...could be a lime deficiency

check your ph, if its good, then its a mg deficiency starting to form

urgod said:

check your ph, if its good, then its a mg deficiency starting to form

Click to expand...

A Mg deficiency would show signs of slight yellowing with rusted looking little holes in the leaves

My ph level good it's at 6