triple pump doser 1st group buy with photos

[FragIt Dan]

S4 flow rate=1.75seconds/ml +/- ~10% for me on my three tanks, but that was with +/- ~1' rise/drop depending on the tank. I tested three of these on three tanks and ran various runs over several days with 12 daily doses of between 20 and 45 seconds/dose on a 100g/l Ca and a saturated dKh solution. Remember after you change the setting you have to hit 'Save', I only mention because I forgot one time and was wondering the same. Dan