what happens if you dont change water (aero)

Hi, looking at seemorebuds video, in that video the grower don't change water, he just adds water, he uses nutes with peroxide, i think he changes water every harvest tho.
anyway is this suitable on a dps aero, or WILL the nossles get clogged?
since if you can run it without changing water every week, that really makes it easier for attics and basements. oh and for lazy people.

quick side question,
whats the brand of nutes to go with, when it comes to dps aero.
also what do i need, wich nutes, ive heard that theres some brands that dont go with aero, and since i hawnt yet grown in aero, i want to know wich nutes imma order.

The problem with not changing out reservoirs is built up salts and specific nutrient defficiency. It is easy for your reservoir to run out of a specific nutrient, then when you up the PPMs with an all purpose, the nutrient that was lacking is now not sufficient. It's a good idea to change out reservoirs at least every couple of weeks, some say minimum once a week during flowering.

I don't know about aero but in an F&D table the res gets changed every five to seven days. Get a garden hose to empty and fill your res. In any situation your res has to be topped up daily with fresh water. After you have set your res don't add anything but fresh water between water changes.