Trident users know that the instructions explicitly state that when calibrating you must have you bottle at the same height as your usual dosing line clip which gives the same head pressure on the line allowing accurate calibration. I have designed this holder to allow this to be done easily as I got fed up of stacking it on top of various boxes and containers to get roughly the same height as my sump lip! 3D printed and suitable for sump glass thickness up to 10mm (wider cam be made upon request) Printed to order by myself in an Apex orange colour.
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