Well, there's a noticeable improvement this morning after lowering the lights yesterday. The two girls that I have put in the system are quite a bit mote perky today, showing some growth on the wee leaves. The other seeds I have in the rockwool took right off last night. Looks like things might be progressing the way I had hoped, haha ( Lights are on 24/7, 13" above the girls) Grabbed a floating thermometer today, a 12" bubblestone and some pH down. Reservior temp. is 68F, Res is really bubbly now, lol. pH should be cool real soon. (was 7.4, yikes) OK, got the pH down to 6.01. Sweetness, lol