First grow on rockwool

So, I've switched to blooming after all. So far so good, except for the fact that I broke my lab PH meter, which is quite expensive. There is also a lot of humidity. In between when the AC is not running, the humidity goes up to 80%, which is no joke at all. I will either buy a dehumidifier or turn on the air conditioner for 24 hours. I don't know what to choose yet, the dehumidifier consumes a lot of electricity, maybe I should just leave the AC on for 24 hours. Yeah, growing in hot countries is not a good idea ^_^.