Erratum. In "Today's numbers" list, last post above, dGH should be 4.5, not 5.4. 80 ppm GH is correct; 4.48 dGH is the exact calculation.

Today's numbers pH: 6.75 ORP: 530 mV TDS: 340 ppm NO3: 13 - 18 ppm PO4: 2.50 ppm K: 40 ppm Fe: 0.90 ppm dKH: 5.7 (101 ppm) CO2: 27.4...

Graphs below are this week's pH, Redox, and Oxygen profiles. Last Friday morning's pH spike shows suspension of CO2 injection during filter change ope...

Swordplants sending out many runners. The E grisebachii 'Tropica' has two, with plantlets. I recently pulled a considerable amount of Sag as it was sp...

Today's numbers pH: 6.75 TDS: 310 ppm NO3: 18 - 22 ppm PO4: 2.13 ppm K: 30 ppm Fe: 0.09 ppm dKH:6.0 CO2: 29.3 ppm* dGH: 4.1 Ca: 17...

Finally! Winding up the system revisions and pump room remodel. I installed a new Apex A3 and reprogrammed the entire control system. Pretty much ever...

Well, I appreciate that very much! We are all new members now. A fresh start will be a good thing, especially since I am completely refurbishing the...