quick temperature question

my dwc res temp is 71.2f. are my plants going to die? i know it says it should be 68f but i cant get it down anymore, ive aready reduced it by blowing a fan on the water, this dropped it from 75f!

hell no i dont even test mine and they grow fine...i think people trip off that to much its not as big as a deal as ur ph and ppm...res temp should b around the same as room temp 71 is cool

sweet thanks very much

no problem good luck..and have u ever gone with a soil grow? hydro is difficult u gotta check ur ph everyday changing the res is a bitch and its just time consuming..i grow both hydro and soils but i love soil cuz its much easier just water it and train it and watch it grow...good luck with ur grow tho