Hey but why ppl are looking over this, how much "nutrients" aka nuts at my house haha, will I need to get threw a full grow in a 12 site 55 gallon rdwc system, runnin the general hydroponic lucas formula ? Probably do a res change every other week, aiming for 2 weeks, ill be growing blue dream or gdp. Of hand how much ph up anddown do u think ill need for this 1st grow. Thank yall