I introduced cal-mag a few minutes ago. 35ppm for now and I will slowly go up as needed. I was reading the sticky for Botanicare products and was under the impression that for cal-mag the grower was using equal doses of grow to cal-mag with RO water. That was just his experience so we will see.

The water temp maxes out at 72 and drops to 68.
The PH is holding steady at 5.8. this meter is great! I have always calibrated it every week but it never needs it. It is only off by 15 ppms after 3 weeks of use but calibration fixes that.
Its weird how the ph of RO water is so low. 3.9 i measured. guess thats due to some carbon gas in the water.

PPM's with pro grow and cal-mag are at a total of 180. I bet they love those trace elements.
JeffersonBud Reviewed by JeffersonBud on . advice please Lets get to the details for veg 3 100w CFL's running 6500k 1 small 6inch fan DWC system with 15 sites Milwaukee 3-1 ph/ec/tds meter 2 and 1/2 gal of RO water 2 6'inch airstones Rockwool cubes net baskett Rating: 5