ppm through the roof

My ppm was 1150 and in four days with almost no evaporation it went up to 1550. Is that normal?

what do you mean no evaporation? the water level has remained the same?

very little evaporation. I started with about 6 gallons and once it went up to 1550 I added five more gallons to try to get it down and it went to 1150. Its just not adding up.

whats the ppm of the water ur adding cause it adds to the total. sometimes the plant may uptake more nutes than water or vice versa depending on the strain and its resilience. if the nutes are jumping then lower ur total ppm count and raise it slowly just keep the same mix ratio. also make sure when you check ur ppm you shake the air out the probe area, it will give you a false reading.

Remove half your water and replace with water & no nutes.

Try calibrating your probe again.
Check to make sure your pumps and timers are working.
Make sure your res. temps are at 68 at the most.