After restarting my Juwel 240L from new I went ahead with plants and now also adding fish through assistance from other forums here.... I am however still trying to dial in the CO2 system in order to achieve a 1pH drop in a duration of 2 hours from start on of CO2 to lights on...up to now I optimised the flow and injecting CO2 from a splitter to two inline diffusers before the spray bars...however a 1pH drop is only being achieved at about 5 hours from CO2 on. In one of the posts I was advised to check the outflow from the cylinder as in the attached video you can note how flow is working - this I was advised may not seem normal as such a long duration can be caused by something wrong in the regulator/solenoid/bubble counter setup, leaks or kinked pipes....I have checked and rechecked for leaks and kinked pipes and I can eliminate these. So can I kindly ask you to have a look at this video (copy and paste link)...you may note the bubble count is quite high and please look at the flow just out of the bubble counter to comment if this is normal. Please also advise if the pressures are normal as shown in the attached photo. https://photos.app.goo.gl/HE7ZvetOZcW38trh1 Look forward for your assistance.