I've been dosing 2-part for better than a month now, and have really noticed a difference in my M. digitatas & birdsnest, but got really
tired of hand dosing 3 times a day, so I finally broke down & picked up a pair of BRS dosing pumps.
I noticed in their specs a maximum of a 20ft head height.... I've got 7ft of head height since I drilled through the floor & put them on a shelf in the basement, so I wanted to check and see if there was any loss. I ran the pumps at 2, 4, 6, and 8 minutes runs into glass vials & checked the volumes with an old 1ml Red Sea titration syringe. Much to my surprise, on each run, I was getting an average of 1.25ml/minute.... I realize 0.15ml/minute more doesn't sound like much, but thats almost 14% over what is generally regarded to be an "extremely accurate" 1.1ml/minute pump.
As little as I'm dosing, it doesn't add up to much difference, but if you've got an SPS
heavy tank and are dosing a lot, 14% can be quite a difference....... just curious if anyone else has bothered checking theirs???