Ok so here is the full run down I am growing 6 big buhhda blue cheese from cutting thet are 21 days into flower they are in a under current deep water culture system running on the shogun nutrient full line up including hydro bloom a and b , calmag, sumo boost (flower booster), Dutch master root zone , and just started using PK last night when I done a nutrient change which is every 7 days. They are under 2x 600w hps air cooled hoods with a 6" extractor running through them to a carbon filter and 4 inch intake the tent the temps have been 22 Celsius at night and up to about 27 max at day time (I know that's a bit high ) the humidity has been my biggest problem for about the last 2-3 weeks sitting between 50% and 70% but I did put a dehumidifier in the tent last night so that should be better from now on but unfortunately it has brought my temp up to about 28 the water temp is spot on as I have a large water chiller hooked to the system which keeps the temp at 19-20 Celsius at all times my ph has been stable at 5.8 - 6.0 never higher or lower and my EC level is 0.5 now never been higher ..... Hope this helps guys if there is anything else you need to know please just ask and I will do my best to answer thanks