tds

[duffman7777]

im growing hydro 29 days today drip feed t 5 light using hesi nutes and recharge and cal mag what is a good tds reading and how do I adjust it up or down going to ebb and flo in bloom 400 w hps any help would b good ( new grower here) plant look pretty good except 1 but 2 days ago my reading was in the 900s checked it a minute ago it was 144 need help with the tds

[Toker1]

TDS is total disolved solids. Want it lower... get a reverse osmosis water treatment system or lower the nutes in the water.