the room temp is kinda high but i dont think its the heat issue...actually this combo meter has 2 probe...it measure ph, ppm, temp...I have foxfarm soil..can i use the cal mag that human take to adjusted or do they have a diff cal mag for plant?

one more question - I changed my rez. this morning my ppm went up to 2000 how can i reduce it..

25gal rez- I put 600ml floraGro, 400ml floraMicro, 200ml floraBloom...

thanks