Don't worry, if there is a problem a mod might move it into 'basic' or 'indoor'.

Humidity can be a bitch. I see you emphasize cleanliness, and that is a VERY important goal when you go through periods of high %RH.

An air conditioner is almost indispensable in most indoor situations. Not only does it control high temps, which can be a KILLER, but it strips excess moisture from the air.

If you don't need the cooling, a dehumidifier is the next choice. Remember to keep it emptied so it keeps running.

Your water may be a problem, not as much because of the ppms, but because the pH is high. You will have to make up your fert mix and then adjust to pH in the high 5s low 6s because I see you are going to be running an aero grow.

Bonus on the dehumidifier, it is sometimes possible to use that for a source of water distilled water. Check the ppms in the catch bucket! And don't forget to use your calmag plus!

There's lots of good help in the hydro section. Good luck!