Help!!!

hey i have a question. I need to know when and how many times to change the water in my bubbleponics system. Also, how often should I feed? I have a 58 ph reading, my ppms are at 60-70 and water temp between 62 and 70. Any help is greatly appreciated.

Some people change it every 2 weeks and some only change it when they switch from veg to flower. That's most common anyway. Hope this helps.

yea alittle I am brandnew at this, how often do you feed..

hey thanxxzs by the way