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

so far very satisfied with this dispenser. I wanted something cheap for my 20g reverse/fragmented liner quarantine tank. It wasn't easy to calibrate to a 2mL per day dose; tried to calibrate to 100ml = 100ml and also 100ml = 2ml but each time it was 1ml overdose. Finally I calibrated to 100ml = 10ml and the dosage is accurate (I add "20ml" to get 2ml). If you have a large tank I think this will not be a problem. That's probably overkill for my setup, but I'm tired of dosing every day. This price can't be beat for what you get! Bring a cheap set of graduated cylinders to calibrate; I can't put a star as the product page clearly states that one is required but not included. After all, it's really good that it needs the old low-cost airlines!