I used to run a bubble magus with no issues as long as u calibrate the lines. But this new jebao man not bad for the price 4 pump plus 1 extra only using 3 atm but before you setup u calibrate each pump to dose out 100ml to calibrate for hose length and its on the dot for me so far. Will be getting another one for future setup for sure. Around 60 bucks on amazon