Review on Jebao Programmable Auto Dosing Pump DP-4: Efficient and Flexible Black Dosing Pump by Misty Myers

Came today. Was very pleased that the original packaging was in perfect condition. Everything looks fine in the box, the product corresponds to the description. The tests will take place just after the weekend. Update: Exactly when calibrated well, stumbled across a Utube video from FishOfHex. He has probably the best video instructions on how to set up this unit, very easy to understand with his step by step guide on calibration, timing/schedule and final setup. Please note that when calibrating your device, you must use a cut piece of breathing tubing. to match the final placement of the device. If you calibrate the device with a different length of air hose compared to the final length of air hose you will use for final placement of the device, there will be little if not a lot of difference (depending on how long or short the hose is) . . air hose is used) in the dose rate that the device is pumping. So longer tubing you use for placement than the original length you used for calibration will result in underdosing and overdosing if the air tubing is shorter than the ones used for calibration. Update: Seems to work very well! One final note, if you are using a longer air hose for pump delivery per FishOHex's instructions, make sure the delivery cycle is working. no more than 250 revs/cycle. Calibrated to 100 ml, the device allows a maximum of 250 revolutions/cycle. You will not be able to achieve this with a longer line. The key is to manually add the desired additive to the pump, ensure the line is full of liquid, then you can start the calibration with 100ml so you don't use up the full 250rpm/cycle of the pump. It can be that accurate, that's for sure!