First hydro grow

Here is my first hydro grow and I have a few questions

What type of light schedule should I keep the clones on?

How often should I feed the plants and change the reservoir ?

You may have better luck if you post in the hydro section: https://www.rollitup.org/hydroponics-aeroponics/

I keep clones on 24 hours of light until they root, then you can do whatever you want 18/6, 24/0 or even go straight to 12/12.

Really depends on what type of hydro system you're using. Speaking for waterfarm, you usually change the res every week or two. I refill the res every morning with the same ppm nute solution as what's in the res. Light schedule is the same 24 hours for clones, 16/8 or 18/6 for veg, 12/12 for flower