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My c02 is showing no pressure after 10 days. The bottle weighs 500g. my tank is 400litres. Is it usual for the c02 to run out so quickly? i wouldn't have got it if i new it was goin to run out this fast! It doesnt appear that i have any leaks in the connection points because they look like they...

I am unable to open the valve on the cylinder. It opens a tiny bit but does not release any pressure. Any help would be great. Thanks

Hi guys, just got my c02 system and ive set it all up just wanted to ask how many bubbles per second should i have? thanks

I understand that putting pressurized c02 into an aquarium will lower the ph of the water. I also read somewhere that it doesnt affect the fish because it doesnt change the kh which is whats is harmfull to fish, is this true? If its going to harm my fish i will not get it, i will be getting a...

My aquarium is a juwel rio 400 (400 litre - 100 US gallon) All my lighting is T5 - i have 2 x 54watt and 2 x 39 all with reflectors which apparently double the output of my lights, is this true? If this is true i have 3.7 watts per gal, if not i obviously have half of that (1.85 wpg). Do i need...

i would really like to put loads of plants in my tank and i understand that i need a c02 system, ive read up on some of the information given on this site and others but it all seems so confusing. I cant work out which system i need? also my tank does'nt have much light, could this be a big...