make damn sure you check it everyday,because a pump in a res. will cause the Ph to fluctuate.The Ag has a small pump in it.i always keep the ph aroung 5.5 to 6.0 mever above or lower
kool.make it a good habit!i have an oakton ph pen.how often do you calibrate?It is necessary to get ph calibration solution so your ph pen will have a more accurate reading.i use 4.0 and 7.0 liquid calibration fluidi do i got a digital ph meter makes thing a whole lot easier
it doesnt have to be on 24/7 i leave mine on 24/7.Depending on what setting you have the AG on ,itll be on 24/7 cant remember which on though,just keep it on tomatoes setting and youll be just fine.looking good, i am growing skunk seeds soon ill be posting a full thread but plants look good, and yea air pump. is it supposed to be on 24/7