calcium deficiency or heat stress

Medium - 7 gallon pro mix
Type - The purps
Nutes- AN line (pro feed) - half strength (carboload says 0.3g ever liter I put 1.5g instead)
14 days into flowering
Over 4ft tall
Ph 6.5
Ppm would range from. 600-700
Temps 25-27 humidity 45-50
1000 watt air cooled- distance from tube to cola 6-8 " away
A/C and dehumidifier with at 12" exhaust and three oscallsting fans on three walls


Thank

do you have ventilation/fan??

8" cool tube open at one end to exhaust the room at the same time srawing the heat from the lights in the tubes. I leave all my exhaust fans in other rooms on usin 12 " exhaust fans . I would draw a picture and upload it but using smart phone right now -_-

here we go , here is how the room looks

OK here is an update on day 24,
I am still stump on what is going on, day 15 to 22(pots dry in 2 days, which i only pour 2 liters into the 7 gallon nursery pots) i gave it prepared water( as in letting the water sit for 3 days with a bubbler) and than ph to 6.5

It was heat and ca deficiency.Now it looks like calcium,heat,and manganese,but don't worry too much since you are almost done.

Try this: water with plain water and check your effluent ppm. If they're high, it's possibly lockout and will benefit from a washing of the medium. cn

Ok it's now day 53, ppm running was 1800 -2000 and ph was 5.8-6.0 -_-"
just started with a final phase solution and now flushing the pots.
Ph water at 6.5 using 70liters for the 7 gal pots
Here are some cola pic how they are so f