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Hi ive had an idea with diy co2, a cheapo hopefully low cost way of having regulated co2 on a timer with no pressure build up worries and low cost recipe. I live very near some crumbly cliffs so have a never ending supply of chalk. that mixed with acid of some sort creates co2 but it is not...

Hi chaps Am i right in thinking that the dimensions on lily pipes are going by the internal diameter and the outer is not mentioned? so the I/D would be 13mm and the O/D would be around 15mm for instance? cheers!

May i ask, someone here who may have lily pipes, if i could get a measurement of the nub bit that sticks out from the pipe to attach a suction cup to and the dimensions of the suction cup please? so the diameter of the protruding nub from the pipe and its length and if possible the diameter of...

Hi Ive been lurking for a while, doing lots of reading for the past few months. Im at a point with my diy build where its worth showing to people now and if anyone would be interested, i hope it would be people on here :D My plan is to build an optiwhite cube type tank for my first...